a.) CCR5 genotypes Freq 1 = .776, Freq Δ32 = .224 and p2 = 0.6, 2pq = .348. q2 = .5; yes, in equilibrium b.) Freq A = .877, Freq S = .123 and p2 = .77, 2pq = .22, p2 = .015 , not in equilibrium
What is Hardy-Weinberg Equilibrium?The Hardy-Weinberg Equilibrium is a fundamental principal of population genetics, which states that “genotype frequencies in population remain constant between generations in absence of disturbance by outside factors”
To know if population is in Hardy-Weinberg Equilibrium, scientists have to observe at least two generations. If allele frequencies are same for both generations then population is in Hardy-Weinberg Equilibrium.
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By comparing homologous sequences of proteins in different organisms, we see that humans and chimps have extremely similar biochemistry, whereas humans and red bread mold have many differences. What does this observation imply?
Select one:
a.
Humans and chimps are the same species
b.
Humans evolved from chimps, not red bread mold
c.
Humans and chimps evolved at the same time
d.
Humans and chimps have a close common ancestor, and humans and red bread mold have a much older common ancestor
layer of connective tissue that surrounds a skeletal muscle?
Each muscle is surrounded by a connective tissue sheath called the epimysium.
which is the outermost layer of connective tissue?
A layer or sheet of connective tissue is referred to as fascia. The body wall, blood arteries, nerves, and the epimysium are all enclosed or lined by the deep fascia, which also surrounds the epimysium.
What do the 3 connective tissue layers around muscle surround?
The layer of connective tissue known as the endomysium surrounds individual muscle fibers. The layer of connective tissue known as the perimysium surrounds the bundles of muscle fibers. The connective tissue layer that envelops a complete muscle is called the epimysium (multiple muscle fibre bundles).
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1) If this gene that has 5 exons assuming that all gene products have the first and last exon, how many different proteins can YOu make? 2) Below is a mature mRNA drawn by a student_ There are problems with this drawing: Identify all 3_
In molecular biology, RNA splicing is the process by which a newly synthesised precursor messenger RNA transcript is converted into a mature messenger RNA. It operates by deleting all introns and splicing exons back together.
1. An exon is any part of a gene that will encode a part of the final mature RNA produced by that gene after introns have been removed by RNA splicing. In RNA splicing, introns are removed and exons are covalently joined to one another as part of generating the mature messenger RNA.
Given gene is,
5'-----1-------2------3-------4-------5--------3'
Possible mature mRNAs with the given condition are as follows
a) 5'-1-2-3-4-5-3'
b) 5'-1-3-4-5-3'
c) 5'-1-2-4-5-3'
d) 5'-1-2-3-5-3'
e) 5'-1-2-5-3'
f) 5'-1-3-5-3'
g) 5'-1-4-5-3'
h) 5'-1-5-3'
Therefore a total of 8 possible proteins can be made from this gene.
2. The mature mRNA drawn by the student is
3'-1-3-2-5-5'
The three problems with the drawing are
a) polarity of the mature mRNA is reversed, that is before splicing it was 5'-3' and after splicing it is 3'-5' which is wrong
b) the third exon is placed before the second exon which is not possible.
c) The size of the exons are not conserved, that is it is different before and after splicing (exon 2 and 3) which is not possible.
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If the distance between two foci of a moon's orbit is 3.7, and the length between the major axis is 7.6; calculate the eccentricity of the moon's orbit.
The eccentricity of the moon's orbit is approximately 0.487.
Eccentricity is a value that describes the shape of an orbit. It is a dimensionless number that ranges from 0 to 1. A value of 0 represents a circular orbit, where the distance from the center of the orbit to the object in orbit is constant. A value of 1 represents a parabolic orbit, where the object in orbit is moving at the escape velocity and will never return to the center of the orbit. Values between 0 and 1 represent elliptical orbits, where the distance from the center of the orbit to the object in orbit varies. The closer the eccentricity value is to 1, the more elongated the elliptical orbit is. Eccentricity is used to describe the orbits of planets, moons, asteroids, comets, and other celestial bodies.
The eccentricity of an orbit is a measure of how "elliptical" an orbit is, with a value of 0 representing a perfect circle and a value of 1 representing a perfect ellipse.
The formula to calculate the eccentricity of an orbit is:
e = c/a
Where:
c = distance between two foci (3.7)
a = length of the major axis (7.6)
e = 3.7 / 7.6 = 0.487
Therefore, the eccentricity of the moon's orbit is approximately 0.487.
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the length of the biologic width of tissue covering a tooth is approximately: group of answer choices a) 1 mm b) 2 mm c) 3 mm d) 4 mm
The correct option is b ; 2 mm ,Under local anesthesia, the biologic width can be determined by probing to the bone level (referred to as "sounding to bone") and subtracting the sulcus depth from the resulting value.
If this distance is smaller than 2 mm in one or more spots, a biologic width violation diagnosis can be validated.
The PDL's typical width ranges from 0.15 mm to 0.21 mm and may shrink with aging. 1,4 PDL widening is one of the most significant changes in the circumrenal structures and may be associated with a variety of disorders.
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consider a cell in g0. use the information in model 1 and model 2 to answer the following question: what if the phase(s) you identified in part a of this question did not occur? what would be the outcome for the cell in that case?
Model 1 states that the arrow's length represents time. It would take less time to create a malignant cell if several abnormally small diseased cells existed.
What do you name a malignant cell?Groups of aberrant cells that collectively create lumps or growths are tumors. The trillions many cells that make up our bodies are where they can begin. Whether a tumor is cancerous (malignant), non-cancerous (benign), or precancerous, it affects how it grows and behaves.
What indications are there that a cell was cancerous?Cancer cells frequently have abnormally large and shaped bodies. Compared to typical cells, they could be bigger or smaller. In order to function properly, normal cells frequently have specific morphologies. Cancer cells frequently exhibit deformed forms and lack vital functions.
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Odette is trying to determine how much carbohydrate she should consume in her diet to meet the AMDR for health. Her total energy intake needed to maintain her current weight is 1,900 kcal per day. She has learned that the AMDR for carbohydrate is 45% to 65% of total energy intake.
Odette is trying to determine how much carbohydrate she should consume in her diet to meet the AMDR for health. Her total energy intake needed to maintain her current weight is 1,900 kcal per day. She has learned that the AMDR for carbohydrate is 45% to 65
Odette should aim to consume between 3420 g and 4940 g of carbohydrates per day to meet the AMDR for health.
To determine how many carbohydrates Odette should consume in her diet to meet the AMDR, she first needs to calculate the range of total energy intake that should come from carbohydrates. The AMDR for carbohydrate is 45% to 65% of total energy intake. To calculate this range, Odette can use the following formula: Minimum: (45% of total energy intake) = (0.45 x 1,900 kcal) = 855 kcal. Maximum: (65% of total energy intake) = (0.65 x 1,900 kcal) = 1235 kcalSo, based on the AMDR, Odette should aim to consume between 855 and 1235 kcal from carbohydrates per day. To convert this range to grams, she needs to multiply the number of kcal by 4, because one gram of carbohydrate provides 4 kcal. Minimum: 855 kcal x 4/g = 3420 g. Maximum: 1235 kcal x 4/g = 4940 Therefore, Odette should aim to consume between 3420 g and 4940 g of carbohydrates per day to meet the AMDR for health. It's important to note that energy needs can vary among people and that the range of carbohydrate intake given by the AMDR, can also vary depending on the physical activity and the health condition, so it's important to consult a registered dietitian or a healthcare professional
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The air sacs that are covered with capillaries where gas exchange takes placeanswer choicesbronchilungsoxygenalveoli
The air sacs that are covered with capillaries where gas exchange takes place is the alveoli.
The alveoli are the small air sacs near the bronchioles' ends (tiny branches of air tubes in the lungs).The alveoli exchange oxygen and carbon dioxide between the blood when you breathe in and out. When oxygen is inhaled from the air, it gets to the body's tissues via the alveoli, blood, and tissues throughout the body. The body's tissues release carbon dioxide into the blood, which then passes via the alveoli and is exhaled.
The farthest-reaching part of the respiratory system is represented by the alveoli. The human body contains over 500 million alveoli. An alveolar septum, which houses the pulmonary capillaries involved in gas exchange and connective tissue, divides each alveolus from the neighboring one.
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challenges of teenage pregnancy
The challenges of teenage pregnancy are numerous.
Teenage pregnancy can be a challenge for the mother, father, and child. It is a difficult experience for both physical and emotional reasons. The challenges include education, employment and housing. Staying away from sexual activity until marriage, and preventing sexually transmitted diseases (STDs) and pregnancy is important as well as understanding why teenage pregnancy occurs.
Teen pregnancy is a significant public health problem in the United States. Teenage mothers are at risk for negative outcomes including poor birth outcomes, decreased educational attainment, and limited labour market earnings.
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ergot is a fungus . a. found atop desert cactus plants b. in moldy rye grain c. attached to morning glory seeds d. related to penicillin
In moldy wheat grains, ergot is usually found (option B)
The fungus Claviceps purpurea, which infects the growing grains of wheat and grasses, is the cause of the plant disease ergot. When ergot bodies instead of kernels emerge during kernel formation, ergot symptoms become visible.
The overwintering structures in the disease cycle are the ergot bodies, also known as sclerotia, which are made of a dense mass of fungal mycelium. The ergot bodies are composed of an inside that ranges in color from white to grey and an exterior that is hard and protective. They can be up to ten times larger than the seed they have replaced, are frequently elongated, and emerge from the glumes of developing heads. Ergot bodies may be up to two centimeters in some grains.
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why might the native and denatured versions of the same proteins show large differences in migration on a page gel?
The native and denatured versions of the same protein can show large differences in migration on a gel because of their different conformations.
What is native version of proteins?This refers to Proteins in their natural state with intact structure that is not changed by heat, chemicals, enzyme reaction, or other denaturants that are named "native proteins".
What is a denatured version of proteins?
What does it mean if a protein is denatured?
A protein is denatured when its normal shape gets deformed because some of the hydrogen bonds are broken. Weak hydrogen bonds break when too much heat is applied or when they are exposed to acid (like citric acid from lemon juice).
In native form, the protein is folded in a specific three-dimensional shape, which can affect its charge and size. When the protein is denatured, it loses its specific shape and can become larger and more positively charged, causing it to migrate more quickly on a gel. Additionally, denatured proteins can also form aggregates which will also affect the migration on gel. So in summary the migration on gel is affected by the protein's size, charge and conformation, which can be different in native and denatured forms.
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a renal corpuscle includes the multiple choice glomerulus and glomerular capsule. glomerulus and renal tubule. renal tubule and collecting tubule. glomerular capsule and renal tubule.
A renal corpuscle includes the a. glomerulus and glomerular capsule.
The kidneys are a pair of bean-shaped organs in a purplish-red body and are located in the abdominal cavity. The kidneys function as a means of excretion of nitrogen-containing metabolic waste.
Renal corpuscle or renal corpuscle is a kidney structure consisting of glomerulus and glomerular capsule. The glomerular capsule has a double wall with the glomerulus in the capsule cavity. While the glomerulus is a string of blood capillaries whose walls are linked to the glomerular capsule so that substances dissolved in the blood also seep into the glomerular capsule. The glomerulus functions to absorb protein from the blood that travels through the kidney blood cells.
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when radiation safety principles are correctly applied during imaging procedures, the energy deposited in living tissue by the radiation can be limited. this results in: group of answer choices completely eliminating the possibility for reducing the potential for adverse effects no change in the possibility for reducing the potential for adverse effects increasing the potential for adverse effects reducing the potential for adverse effects
when radiation safety principles are correctly applied during imaging procedures, the energy deposited in living tissue by the radiation can be limited. this results in: reducing the potential for adverse effects
Many medical imaging procedures involve the use of radiation. Medical imaging procedures deliver x-ray beams, a type of ionizing radiation, to a specific part of the body, creating a digital image or film that shows the structures inside that area, such as bones, tissues, and organs. These images can be used by healthcare providers for diagnostics, determining what is causing your health problem, and, in some cases, guiding treatment. A radiologist, a medical professional who is trained and certified to conduct radiation imaging studies, typically performs imaging procedures in radiology or imaging centers in hospitals or clinics. Medical radiation practices and equipment are governed.
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Which of the following is an example of a difference between planets in the solar system?
Answer:
Explanation:
One example of a difference between planets in the solar system is their size. The sizes of the planets vary greatly, with Mercury being the smallest and Jupiter being the largest. Additionally, the planets vary in composition. Mercury is composed primarily of iron and rocky material, while Jupiter and Saturn are composed mostly of gases such as hydrogen and helium. Furthermore, the planets also differ in their number and type of moons, with some having none and others having a multitude of them. Finally, the planets differ in their axial tilt and orbital distance from the Sun, which affects their climate and seasons.
if a plant cell is placed in a salt solution and the following observation is observed, what is the probable explanation of the net movement of molecules? (1 point)
When a plant cell is placed in a salt solution, the salt will lose water and will shrivel up.
When a particular plant cell is placed in a salt solution, we will be able to observe that the water flows out from plant cells as a result of the process of exosmosis and this causes the shrinkage of cells which is known as plasmolysis and these cells will now be called plasmolyzed cells.
During osmosis, the movement of the flow of water occurs from a region of highwater potential to low water potential. In this case, the water potential present inside the plant cell is more as compared to the water which is present outside in the salt solution.
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basal metabolic rate is the body's resting rate of: group of answer choices a) the settling point. b) insulin secretion. c) energy expenditure. d) homeostasis.
The body's resting rate of energy expenditure is basal metabolic rate (option C)
The rate at which a person expends energy while at rest is known as basal metabolic rate (BMR), which eliminates the variable effect of physical activity. The BMR is responsible for about 60% of daily energy consumption. This means that it contains the energy required for heart function, proper body cellular equilibrium, brain and other neuron activity, and so forth. Your body burns calories at a basal metabolic rate (BMR), which is a measure of how well your body is able to sustain life.
Age, weight, height, gender, environmental temperature, dietary patterns, and exercise routines are some of the variables that affect the individual metabolism rate, or BMR.
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describe what would occur in the cell if the activated kinase enzyme continued to be active for a long time
As long as the protein kinases were active, the transcription factor would continue to transcribe the DNA strand.
Failure to activate tyrosine kinase would impede the phosphorylation of the tyrosine's substrate protein, which is essential for receptor activation. As a result, the specialized relay proteins found within the cell would be unable to recognize the receptor.
When MAP kinases are active, transcription factors in the cytoplasm or nucleus are phosphorylated and activated, resulting in the production of certain target genes and a biological response.
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all amino acid-based hormones are lipid soluble and can cross the plasma membrane. True/False ?
a(an) ________ begins as a one-cell structure that is created when a sperm and egg merge.
o embryo
o placenta
o protean
o zygote
The correct option is D; zygote , a(an) zygote begins as a one-cell structure that is created when a sperm and egg merge.
A sperm and an egg combine to form a one-cell structure known as a zygote. At this moment, the baby's sex and genetic composition have been determined. The zygote splits and grows throughout the first week following conception, growing from a one-cell structure to two cells, then four cells, then eight cells, and so on.
zygote. the haploid gametes (sperm and egg), which unite to form the diploid fertilized egg, during fertilization. meiosis. the division of cells inside the reproductive organs of a sexually reproducing organism to create haploid gametes from diploid cells.
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how would the properties of water change if the water molecule were linear rather than bent? why would it be less satisfactory as the basis for living cells?
If the water molecule were linear rather than bent, it would not be able to form hydrogen bonds as easily, therefore making it less effective to participate in chemical reactions involving hydrogen bonding interactions.
If water were linear, it would not have a permanent dipole moment and would not be able to form hydrogen bonds as easily. This would make it less effective at dissolving polar substances and participating in chemical reactions involving hydrogen bonding. It would also be a poorer solvent for ionic compounds. These properties would make it less satisfactory as the basis for living cells because many biological molecules require a solvent that can effectively dissolve polar and ionic substances and participate in hydrogen bonding interactions.
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pls help my hw is due in a few hrs
The primary functional difference between mitotic anaphase and meiotic anaphase II is that in mitotic anaphase, the sister chromatids are separated and move to opposite sides of the cell while in meiotic anaphase II, the homologous chromosomes are separated and move to opposite sides of the cell.
What is the primary functional difference between mitotic anaphase and meiotic anaphase II ?The primary functional difference between mitotic anaphase and meiotic anaphase II is that in mitotic anaphase, the sister chromatids separate and move to opposite poles of the cell, whereas in meiotic anaphase II, the homologous chromosomes separate and move to opposite poles of the cell.During mitotic anaphase, the sister chromatids are pulled apart by the spindle fibers, and they move to opposite poles of the cell. This results in two identical daughter cells, each with the same genetic information as the original parent cell.During meiotic anaphase II, the homologous chromosomes separate and move to opposite poles of the cell. This results in four haploid daughter cells, each with half of the genetic information of the original parent cell. This process is known as reductional segregation, and it is important for sexual reproduction because it allows for genetic diversity in the offspring.In summary, the primary functional difference between mitotic anaphase and meiotic anaphase II is that in mitotic anaphase, the sister chromatids separate and move to opposite poles of the cell, whereas in meiotic anaphase II, the homologous chromosomes separate and move to opposite poles of the cell. This process of reductional segregation allows for genetic diversity in sexual reproduction.To learn more about mitotic anaphase and meiotic anaphase II refer to:
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the structures which are between the urethra and the vas deferens are the ?
The structures which are between the urethra and the vas deferens are ejaculatory duct in male reproductive system.
The male reproductive system includes the outside genitals (, testes and the scrotum) and internal parts, consisting of the prostate gland, vas deferens and urethra. a man's fertility and sexual trends depend upon the normal functioning of the male reproductive system, in addition to hormones launched from the brain.
Vas deferens: The vas deferens is a long, muscular tube that travels from the epididymis into the pelvic hollow space, to just in the back of the bladder. The vas deferens transports mature sperm to the urethra in practise for ejaculation.
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This protein on the vesicle binds calcium, and when activated, swings down to knock complexin out of the SNARE complex, allowing it to fully zip closed and release transmitter from the vesicle
Synaptotagmin-1, a protein that recognises calcium ions at synapses, collaborates with the SNARE complex to promote vesicle fusion with the cell membrane.
What does snare protein stand for?NSF stands for N-ethylmaleimide sensitive factor, SNARE stands for soluble NSF attachment protein, and SNAP represents for SNARE receptor! Soluble N-ethylmaleimide-sensitive factor-attachment protein receptors is a less descriptive but more straightforward use of the SNARE acronym recently employed [1, 4-5].A helical bundle made up of four SNARE motifs mediates the interaction of individual SNAREs to form a complex (Figure 1(a)). In the instance of the synaptic SNARE complex, syntaxin (t-/Q-SNARE) contributes one SNARE motif, SNAP-25 (t-/Q-SNARE) contributes two, and VAMP (v-/R-SNARE) contributes one.SNAREs are membrane- and surface-bound small proteins that are joined by a segment that spans the membrane or by lipid chains that are covalently adhered. The SNARE proteins produce a compact bundle of alpha helices when they interact, drawing the membranes together.To learn more about snare protein refers to:
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What happens to the homologous pairs of chromosomes in meiosis I?
During meiosis I, homologous pairs of chromosomes line up at the equator of the cell, also known as the metaphase plate. This process is called synapsis. Once aligned, the homologous chromosomes exchange genetic material through a process called crossing over. After crossing over, the homologous chromosomes separate, and are pulled to opposite poles of the cell by the spindle fibers. This results in the formation of two daughter cells, each with one copy of each homologous pair of chromosomes. This process is known as disjunction.
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what is the major difference between the national park service and the united states forest service
The National Park Service's mission is to protect natural, historic, and cultural resources for present and future generations to enjoy and learn from. There are very tight laws about what you may and cannot do inside a national park, which are managed and administered by the park service, a division of the US Department of the Interior.
In a national park, logging and any commercial or other resources that compromise the park's sacredness are not permitted (a handful of exceptions do exist). The NPS also oversees national recreational areas, as well as national scenic rivers. The USFS seeks to benefit people for many generations to come by using the land, timber, and grasslands sustainable.
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Maggie recorded her observations of the baking soda used in lab today. which observation indicated a chemical
property of the baking soda?
a. the texture is fine crystals.
b. she observes bubbles.
c. the color is white.
d. the substance dissolves.
The observation that indicates a chemical property of the baking soda is: (b) she observes bubbles.
Chemical property of any substance is the one that has the ability to cause some chemical changes in the substance. It changes the chemical bonds of the substances during a chemical reaction that causes the substance to change.
Baking soda is also known by its chemical name sodium bicarbonate. Baking soda can react with an acidic substances that releases carbon dioxide and therefore bubbles are observed. It is widely used in the baking purposes due to its property of chemical leavener.
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why would it be important that many metabolic byproducts be precursors for gluconeogenesis? why is this an important bodily process?
glucose is very essential to our body, especially in states of medium or high intensity exercise. By having all these precursors, it ensures that glucose will be made through gluconeogenesis.
The process of converting non-carbohydrate substrates (such as lactate, amino acids, and glycerol) into glucose is known as gluconeogenesis (Figure 1). Lactate and alanine are both converted into pyruvate before entering the mitochondrion and being carboxylated to oxaloacetate (OAA) by pyruvate carboxylase (PC). OAA is then reduced to malate and transported to the cytoplasm, where it is reoxidized to OAA, decarboxylated, and then phosphorylated to phosphoenolpyruvate (PEP) by cytosolic PEP carboxykinase (PEPCK-C). Recent research indicates that, in addition to cytosolic PEPCK, mitochondrial OAA can be directly converted to PEP by mitochondrial PEPCK (PEPCK-M) and then shuttled to the cytoplasm.
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living organisms, such as trees and cows, share certain characteristics of life. which statement describes a difference in one of the characteristics of life shared by trees and cows?
Cellular organization, the capacity for sexual reproduction, growth and development, energy usage, homeostasis, reaction to their milieu, and the capacity for adaptation are something like by all living creatures.
What does cellular organization entail?Cellular organization refers to the elements that comprise a cell. Organelles are the collective name for all of the distinct and important roles that each element of the cell is responsible for performing. Varying levels of organization exist in all living things.
What are the benefits of cellular organization?In order to exist, living beings must do certain actions. To keep the body functioning, different sections do various tasks. To maintain the animal alive, all of its parts function harmoniously.
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at which stage in meiosis i do the pairs of homologous chromosomes come together?
During meiosis I, the pairs of homologous chromosomes come together during a process called synapsis.
Synapsis is the physical pairing of homologous chromosomes, which are identical in terms of genetic information but come from different parents. The pairing of homologous chromosomes is important for the proper segregation of genetic information during meiosis.
The homologous chromosomes line up next to each other and form a structure called a tetrad. This allows for the exchange of genetic information through a process called "crossing over," which increases genetic diversity in the resulting cells. Synapsis occurs during prophase I, the first stage of meiosis I.
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What is the term for redness and bumpiness in the cheeks or upper arms that is caused by blocked follicles
keratosis pilaris is the term for redness and bumpiness in the cheeks or upper arms that is caused by blocked follicles. it usually do not cause any pain or itching.
Keratosis pilaris is a inoffensive skin condition that causes dry, rough patches and bitsy bumps on the upper arms, shanks, cheeks, and buttocks. The bumps generally don't hurt or itch. Keratosis pilaris is a common skin condition. It can not be cured or averted. still, you can treat it with moisturizers and tradition creams to help ameliorate the appearance of the skin. The condition generally goes down by the age of 30. Keratosis pilaris can do at any age, but it's more common in children. Symptoms include effortless bitsy bumps on the upper arms, shanks, cheeks, or buttocks. Sot, rough skin in bumpy areas. Worse when seasonal changes beget low moisture and dry skin. Goose meat- suchlike sandpaper bumps
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