Dominance occurs when one allele masks another at the same location, but epistasis occurs when one locus masks another.
The condition is called as "epistasis," and it occurs when the expression of one or more other genes changes (e.g., masks, inhibits, or suppresses) the expression of a certain gene. The pigmentation of mice is an example of epistasis.
The dominant allele of one gene masks the expression of all alleles of another gene in dominant epistasis, whereas recessive epistasis masks the expression of all alleles of another gene. This is the primary distinction between dominant and recessive epistasis.
Learn more about to Dominance
https://brainly.com/question/14053639
#SPJ4
In a food web, green plants take in carbon dioxide and water to make sugars in the presence of sunlight.
How are carbon dioxide and water returned to the enviroment?
A. by decomposing the dead parts
B. by becoming food for the herbivores
C. by transpiration and decomposition
D. by cellular respiration and transpiration
Answer:
C. by transpiration and decomposition.
Explanation:
A. Green plants return carbon dioxide to the environment through a process called photosynthesis, in which they take in carbon dioxide and water, and using the energy from sunlight, convert it into glucose, a type of sugar. They also give off oxygen as a byproduct.
B. When herbivores consume the plants, they take in the carbon and energy stored in the plant's tissues, but the carbon is returned to the environment through the herbivore's own metabolism and excretion.
C. Transpiration is the process by which water is lost through the leaves of the plant, and it is returned to the environment through evaporation. Decomposition is the process by which dead plant material is broken down by microorganisms, releasing the stored carbon and other nutrients back into the environment.
D. Cellular respiration is the process that green plants and all other living organisms use to release energy stored in glucose, by converting it into ATP, a molecule that stores energy. Transpiration is the process by which water is lost through the leaves of the plant, and it is returned to the environment through evaporation.
which sequence of bases and amino acids could be produced by transcription and translation of the dna molecule shown?
"UACUUUACGAAAGCGCCC and Tyr The Thr Lys Ala Pro" sequence of bases and amino acids could be produced by transcription and translation of the dna molecule shown.
What is amino acids?Amino acids are chemicals that make proteins when they combine. The building blocks of life are amino acids and proteins. Amino acids are left over after proteins are digested or broken down. The human body requires amino acids to produce proteins, which aid in digestion. The sequence of bases and amino acids "UACUUUACGAAAGCGCCC and Tyr The Thr Lys Ala Pro" might be created by transcription and translation of the dna molecule depicted. Amino acids are needed for the creation of body protein as well as other nitrogen-containing molecules including creatine, peptide hormones, and certain neurotransmitters. Although allowances are given in terms of protein, amino acids are the biological need.
Here,
The sequence of bases and amino acids "UACUUUACGAAAGCGCCC and Tyr The Thr Lys Ala Pro" might be created by transcription and translation of the dna molecule depicted.
To know more about amino acids,
https://brainly.com/question/14583479
#SPJ4
Which statements are true about mechanical barriers? (1) Mechanical barriers physically block pathogens from entering the body. (2) The skin is the most important mechanical barrier. (3) Mechanical barriers are living organisms that help protect the body. (4) Mechanical barriers destroy pathogens on the outer body surface.
Mechanical barriers physically block pathogens from entering the body. The correct option is A.
What are mechanical barriers?The first line of defence against pathogens is mechanical barriers, which physically prevent pathogens from entering the body.
The skin, mucous membranes, and bodily fluids like tears and urine serve as mechanical barriers that prevent infections from entering the body.
Enzymes in saliva, perspiration, and semen act as chemical barriers that eliminate infections on the surface of the body.
The skin and the tissue layers that face the lung's airways are also referred to as epithelia and serve as the body's external biological barriers, much as the surface of the intestines.
Thus, the correct option is A.
For more details regarding mechanical barriers, visit:
https://brainly.com/question/13712242
#SPJ1
f this gene were found to be expressed at different levels in different cells of the same organism, what would be responsible? quizzlet
Answer:
By the sperm cell dividing or by 5 sperm cells enter the egg at the same time
Explanation:
One sperm cell can break down into two to or two sperm cell reach the egg at the same time resulting in either Identical twins (monozygotic) or Fraternal (dizygotic) so that theory explain in Quintuplets
Which answer choice lists the steps of the scientific method in the correct order? a. observation, hypothesis, experiment, conclusion, scientific theory b. scientific theory, conclusion, hypothesis, experiment, observation
c. hypothesis, observation, experiment, conclusion, scientific theory d. observation, experiment, hypothesis, conclusion, scientific theory e. conclusion, hypothesis, observation, experiment, scientific theory
The formulation of scientific theories supported by experimental data will be the last phase. The current alternative, which involves observation, hypothesis, experiment result, and then science, is option one.
The first step in the scientific technique of problem-solvingsolving Mcq is which of the following?The "Question" is the first phase of the scientific method. The "Problem" is another name for this step. You should formulate your query in a way that allows experimentation to provide a solution. So that everyone understands the problem you are attempting to tackle, keep your inquiry succinct and straightforward.
What does the scientific approach resolve?Making conjectures (hypothetical explanations), drawing predictions from the hypothesis as logical consequences, and finally conducting experiments are all steps in the scientific method.
To know more about scientific method visit:
https://brainly.com/question/7508826
#SPJ4
how do bacteria control pathogenicity with quorum sensing
It is believed that quorum sensing gives pathogenic bacteria a way to reduce host immunological reactions by postponing the development of tissue-damaging virulence proteins until enough bacteria have gathered and are ready to overpower host defensive mechanisms and establish infection.
A bacterium's capacity to detect information from other cells in the population when they reach a specific concentration is known as quorum sensing in prokaryotic biology (i.e. a Quorum). When a single bacterium releases autoinducers (AIs) into the environment, their concentration is too low to be noticed, according to the theory underlying the phenomena of quorum sensing, or cell-to-cell communication. The bacteria can detect a crucial cell mass and respond by activating or repressing target genes when there are enough bacteria present. However, when enough bacteria are present, AI concentrations rise to a threshold level.
learn more about quorum sensing here
https://brainly.com/question/29992758
#SPJ4
the apical margin of a dental restoration extends into the area of the tooth that is normally occupied by the junctional epithelium and connective tissue attachment fibers. is this restoration good for the health of the periodontium? group of answer choices a) yes, removal of decay will permit better self-care in this area b) yes, the design of this restoration presents no problems for the periodontium c) no, this restoration violates the biologic width d) no, because to extend subgingivally in this manner, the margin of the restoration must not be well adapted to the tooth surface
No, this restoration is not good for the health of the periodontium, this violates the biologic width.
What does junctional epithelium apical migration entail?When periodontal pockets arise, junctional epithelium (JE) migrates apically. Lipopolysaccharide (LPS) and proteases are agents linked to the onset and progression of periodontal disease. When given topically, these agents cause the JE to migrate apically along the root surface.
Importance of junctional epitheliumWhen the junctional epithelium (JE), an epithelial component that is immediately attached to the tooth surface and has the special ability to guard against bacterial infections, is damaged, the periodontal tissue becomes inflamed, and the alveolar bone is lost.
The long junctional epithelium is what?Hemidesmosomes and the basal lamina work together to experimentally develop long junctional epithelium that adheres to the cementum surface. The peri-implant epithelium differs from the usual junctional epithelium in terms of proliferation and sticky structure.
To know more about junctional epithelium :
https://brainly.com/question/28174161
#SPJ4
how do the two members of a pair of homologous chromosomes differ from each other?
Two members of a pair of homologous chromosomes differ from each other because of the different alleles.
The chromosomes of a homologous pair each have the same genes in the same order, but differences between them can result in different alleles. Some of these allelic variants have functional implications and others do not. Her two members of a homologous chromosome are different from each other because they have different versions of the same gene called alleles. As humans, our somatic cells are diploid. That is, there are two copies of each chromosome. We get one copy of each chromosome from our parents, one of hers from our mother, and one from our father.
Learn more about the chromosomes in
https://brainly.com/question/30077641
#SPJ4
Label the parts of the eye in the picture. The choices are optic nerve, cornea, iris, pupil, lens, and retina.
The body's visual organ is the eye. The iris is represented by 1, the pupil by 2, the lens by 3, the cornea by 4, the retina by 5, and the optic nerve by 6.
The parts of the eye are as follows: On the outside of the eye, a transparent membrane called the cornea regulates the amount of light that reaches the eye. It shields the iris from direct light exposure. By contracting and relaxing, the iris muscle regulates the amount of light that enters the eye. As the eye widens in the dark and contracts in very bright light to let less light in, the pupil serves as a window for light entry. The lens directs the incoming light toward the eye's retina. This allows the person to see things clearly. Through the optic nerves, the retina transmits the image to the brain. The retina has rod and cone cells.
The full question was:
Label the parts of the eye in the picture. The choices are optic nerve, cornea, iris, pupil, lens, and retina.
(1)
(2)
(3)
(4)
(5)
Learn more about eye here:
https://brainly.com/question/10528856
#SPJ4
true/false. Lysosomes digest food particles brought into a cell by endocytosis. After a vesicle containing food particles fuses with a lysosome, H ions are transported into the lysosome from the cytosol. This significantly lowers the pH of the lysosome relative to the cytosol and activates the enzymes that digest the particles.
Answer:
True. Lysosomes are membrane-bound organelles that contain digestive enzymes that can break down large molecules, such as proteins, carbohydrates, and lipids. When a vesicle containing food particles fuses with a lysosome, the pH of the lysosome is lowered relative to the cytosol by the transport of H ions into the lysosome from the cytosol. This lower pH activates the enzymes that digest the particles.
Answer the following questions about the probable offspring of two heterozygous parents.
6. fill in the blank text field 1
enter
out of 16 offspring are likely to have smooth, green pods.
7. fill in the blank text field 2
enter
out of 16 offspring are likely to have smooth, yellow pods.
8. fill in the blank text field 3
enter
out of 16 offspring are likely to have wrinkled, green pods.
9. fill in the blank text field 4
enter
out of 16 offspring are likely to have wrinkled, yellow pods.
Answer:
2
ee
s
s
e
e
ei think Ur answer and question is very correct go ahead you'll definitely get it correct don't be discouraged I looked at it and Ur correct dwwww
Explanation:
this is because I looked at Ur hypothesis and Ur theories and saw how inlined nthey are
help me pleasee i need thiss
Answer:
The chromosomes in the homologous pair each have the same genes in the same order, but there might be variations between them, resulting in different alleles.
Explanation:
What is a major subdivision that serves as the communication lines that link all parts of the body to the central nervous system?
The body's muscles, glands, and sensory receptors all communicate with the central nervous system (CNS) via the peripheral nervous system (PNS).
Two halves, the central nervous system and the peripheral nervous system, combine to form the nervous system of bilateral animals.
Outside of the brain and spinal cord, there are nerves and ganglia that make up the peripheral nervous system (PNS).
The portion of your nervous system that is located apart from your brain and spinal cord is known as your peripheral nervous system (PNS).
It is crucial for both relaying data from various regions of your body back to your brain and carrying out instructions from your brain to various bodily components.
To know more about spinal cord, visit:
https://brainly.com/question/12187861
#SPJ4
Why does meiosis produce cells with fewer chromosomes?
Which condition is essential for natural selection to occur?
A. Unlimited resources
B. Inherited variation
C. A static environment
D. A long life span
Answer:
В
Explanation:
Inherited variation
Natural selection is a process that occurs when certain inherited traits or variations of a species give certain individuals an advantage in their ability to survive and reproduce in a given environment. Therefore, for natural selection to occur, there must be inherited variation within a population. Other conditions such as unlimited resources, a static environment, and a long life span do not necessarily have a direct impact on natural selection. However, these factors can affect the relative fitness of individuals with different inherited variations and thus influence the outcome of natural selection.
the part of the respiratory system that is the voice box
larynx is the part of the respiratory system that is the voice box. it is made of Membranes, which also help hold cartilage together.
The larynx is a component of the respiratory system. It is a hollow tube that transports air from your throat (pharynx) to your trachea and then to your lungs. It also houses your vocal cords and is necessary for human speech, so it is also known as the voice box. Your larynx is located in the center of your neck, near the Adam's apple. It's between the fourth and sixth cervical vertebrae (neck bones). The larynx serves three primary functions in the body: Breathing. Making vocalizations. Keeping food and other particles out of your trachea, lungs, and other respiratory organs.
learn more about larynx here
https://brainly.com/question/27008578
#SPJ4
how are sebaceous glands associated with hair follicles
Typically linked to hair follicles, sebaceous glands secrete a fatty substance called sebum into the follicular duct, which subsequently travels to the skin's surface.
With the exception of the palms of the hands and the soles of the feet, the glands are found all over the body, although they are most prevalent on the scalp and face.The sebaceous gland releases sebum through the sebaceous duct that connects the gland to the hair follicle, which is a combination of fats (triglycerides, wax esters, squalene, and cholesterol) and cellular waste. Sebum contributes to the formation of the skin's thin, somewhat oily surface coating, keeping the skin flexible and preventing it from absorbing too much water.During the fourth month of pregnancy, sebaceous glands start to emerge from embryonic hair follicles, and by the time a baby is born, they are enormous and fully formed.
learn more about sebaceous gland Refer:brainly.com/question/30088019
#SPJ4
a woman homozygous for the gene mutation that causes cystic fibrosis, with a partner who does not carry the same mutation, has what chance of having a child with the disease?
Answer:
A woman who is homozygous for the gene mutation that causes cystic fibrosis has a 25% chance of having a child with the disease if her partner does not carry the same mutation. This is because the mutation is recessive, so the child must inherit two copies of the mutated gene in order to display the trait. If the woman's partner does not carry the mutated gene, then the child only has a 25% chance of inheriting two copies of the mutated gene and thus displaying the trait.
Which factor is not required for natural selection to occur? variation within a population inheritance of traits selective pressure an anticipated change in the environment genetic differences
Natural selection is the process by which organisms that possess certain traits are more likely to survive and reproduce than those without the traits.
This process is responsible for the gradual evolution of species and is one of the most important mechanisms of evolutionary change. In order for natural selection to occur, several key factors must be present, including variation within a population, inheritance of traits, selective pressure, and genetic differences.
The factor that is not required for natural selection to occur is an anticipated change in the environment. While environmental changes can certainly influence the process of natural selection, they are not a necessary component. For example, if a population has sufficient variation and is subject to strong selective pressures, natural selection can still occur even if the environment remains constant. Therefore, while environmental change can be an important factor in the process of natural selection, it is not a requirement for natural selection to occur.
In conclusion, for natural selection to occur, several key factors must be present, including variation within a population, inheritance of traits, selective pressure, and genetic differences. An anticipated change in the environment is not required for natural selection to occur, although it can certainly influence the process. By understanding the components of natural selection, we can gain a better appreciation for the process by which species evolve and adapt to their environment.
Learn more about Natural selection at : https://brainly.com/question/2725702
#SPJ4
natural selection can be summarized by which statement? group of answer choices within a population, some variations are favored by environmental conditions and others are not none of the answers are satisfactory all species are fixed organisms transform and pass these transformations on to their offspring
The correct statement about natural selection is People who possess the most advantageous traits live and procreate.
A population's members are naturally variable, which means that they are all distinctive in some ways.
This variation indicates that some people have characteristics that are more environment-appropriate than others.
The process by which "organisms with more advantageous traits" are more likely to survive and procreate is known as "natural selection." The process of "differential survival" and "reproduction in organisms" with different phenotypes is known as natural selection. The struggle for existence, variation, and inheritance is represented by the conditions highlighted in bold above. According to some, these circumstances are both necessary and sufficient for natural selection to take place.
To learn more about natural selection click here:
https://brainly.com/question/2725702
#SPJ4
the endocrine system has many functions including ______.
The Endocrine System has many functions including -Controlling movement of food through the digestive tract,Regulating blood ions concentrations,Maintaining blood volume.
The body is covered with a network of glands and organs known as the endocrine system. It functions crucially in regulating and controlling various bodily processes, just like the nervous system does.The endocrine system, on the other hand, employs chemical messengers known as hormones while the neurological system communicates through nerve impulses and neurotransmitters.By releasing hormones, the endocrine system is in charge of controlling a variety of body processes.The endocrine system's glands release hormones, which then circulate through the blood to the body's organs and tissues. These organs and tissues are subsequently given instructions by the hormones on how to behave or perform.
complete question:The Endocrine System has many functions including ____________. (select all that apply)
a) Producing neurotransmitters
b) Controlling movement of food through the digestive tract
c) Regulating blood ions concentrations
d) Maintaining blood volume
e) Receiving sensory information from the environment
learn more about endocrine system Refer:brainly.com/question/29771202
#SPJ4
the hip bone joins the end of the thighbone. select one: a. proximal b. distal c. lateral d. medial
The upper (proximal) end of the femur connects to the hip joint. So, the correct option is (A).
What is Hip joint?The hip joint is defined as a ball-and-socket joint that allows motion and gives the stability needed to bear the weight of the body where the socket area called the acetabulum is inside the pelvis and The ball part of this joint is above the thighbone which is called femur. It attaches to the acetabulum to form the hip joint.
The function of hip joint is that the hip acts as a multi-axial, ball-and-socket joint on which the upper body is balanced during stance and gait, where the balance and stability provided by the hip joint allow for motion. while supporting the forces encountered during daily activities.
Thus, the upper (proximal) end of the femur connects to the hip joint. So, the correct option is (A).
Learn more about Hip joint, here:
https://brainly.com/question/13687028
#SPJ1
living cells have evolved mechanisms that upregulate the production of atp in response to increased levels of atp hydrolysis; based on information in this passage, why has the ability to hold atp concentration far above equilibrium concentration in cells provided a selective advantage?
In response to higher levels of ATP hydrolysis, living cells have mechanisms that have evolved that upregulate the synthesis of ATP. Given the information in this section, why has the ability to maintain ATP concentrations well above concentration in cells offered a selection advantage.
reduces these cells' G'o for Hydrolysis of atp
reduces the ATP hydrolysis Keq in these cells
increases these cells' ATP hydrolysis Keq
reduces these cells' G for Adenosine triphosphate
What exactly is a balance?The state of equilibrium is one in which the forward and backward rates of response are equal.
How does hydrolysis work?In a typical type of chemical reaction called hydrolysis, the chemical properties that already exist are primarily broken down by water.
To know more about equilibrium visit :
https://brainly.com/question/28527601
#SPJ4
What neurotransmitter will result in constriction of the pupil? a. norepinephrine b. acetylcholine c. epinephrine d. serotonin
d)serotonin. Pupil constriction is caused by the neurotransmitter acetylcholine.
In the brain and throughout the body, serotonin is a neurotransmitter that communicates between nerve cells. Mood, sleep, digestion, nausea, wound healing, bone health, blood coagulation, and sexual desire are just a few of the bodily processes that serotonin is essential for.How do you feel when you take serotonin?
Serotonin in the brain is thought to control emotions like happiness and worry. Increasing serotonin activity in the brain is thought to be how selective serotonin reuptake inhibitor (SSRI) drugs work to treat mood disorders.
Learn more about Serotonin here:
https://brainly.com/question/14691282
#SPJ4
A cell has 16 chromosomes. after mitosis, how many chromosomes will the daughter cells have?
If a cell with 16 chromosomes goes through mitosis, each daughter cell will have 16 chromosomes as well.
Mitosis is a cell division process that produces two identical daughter cells.
Because DNA was replicated prior to mitosis, these daughter cells have the same genetic material.
Mitosis is a nuclear division process that occurs in eukaryotic cells when a parent cell divides to produce two identical daughter cells. Mitosis is the separation of the duplicated genetic material carried in the nucleus during cell division. Prophase, prometaphase, metaphase, anaphase, and telophase are the conventional stages of mitosis. There is no cell growth during mitosis, and all cellular energy is directed toward cell division.
To know more about cell division click on the below link:
brainly.com/question/29773280
#SPJ4
_____ aid in the coordination of the activities of adjacent animal cells.a). Plasmodesmatab). Keratin fibersc). Tight junctionse). Desmosomesf). Gap (communicating) junctionsExpert Answer
Gap (communicating) junctions help in the coordination of the actions of adjacent animal cells.
Gap junctions can be considered as leaky junctions that connect the two corresponding cells in animals and therefore establish connection between them. The cytoplasm of the two cells remain in direct contact due to gap junctions.
Animal cells are the type of eukaryotic cells that do not contain the cell wall. They consist of plasma membrane and all of the cell organelles like mitochondria, nucleus, endoplasmic reticulum, lysosomes, golgi body, etc. However, animal cells do not possess the chloroplasts as present in plant cells. They contain centrioles specific to animal cells only.
To know more about gap junctions, here
brainly.com/question/15558269
#SPJ4
why do some animals migrate While others are able to live in the same place year around
Does breast tenderness come and go early pregnancy?
Yes, breast tenderness can come and go in early pregnancy.
The soreness can be constant, or it can come and go. During the earliest weeks of pregnancy, breast pain tends to be dull and achy. The breasts may feel heavy and swollen. They can be super sensitive to the touch, making exercise and sex play very uncomfortable.
Just like other early pregnancy symptoms, breast tenderness can come and go. Some women are lucky and don't have much trouble with early pregnancy symptoms at all. Other women experience pregnancy symptoms right up until the time they give birth. Both circumstances are completely normal. It may even continue through the latter part of the gestation for some women.
For further learning about breast tenderness, refer to the link:
https://brainly.com/question/11161766
#SPJ4
where is mitosis in the cell cycle before and after?
Mitosis is a stage in the cell cycle that follows the interphase and is followed by the interphase again.
Before mitosis, the cell is in the interphase which is composed of three stages: G1, S, and G2. In G1 stage, the cell carries out normal metabolic processes, in S stage DNA is replicated, and in G2 stage the cell checks for any damage to the replicated DNA before mitosis.
After mitosis, the cell enters into the interphase again, where it goes through the same three stages (G1, S, and G2) before entering mitosis again. This is the process that results in the formation of two identical daughter cells with the same number of chromosomes.
Some cells like nerve cells and muscle cells, will enter a different stage called G0, which means they are not actively cycling and will not divide again.
To know more about mitosis, click here,
brainly.com/question/1186551
#SPJ4
Rank from the first to the last steps to describe the correct order of events to maintain homeostasis.
The steps necessary to maintain sodium ion homeostasis have been taken. Outside of cells, sodium ion concentration is regulated by a negative feedback loop. See explanation for further information.
When there is a little amount of extracellular sodium ions, the macula densa's receptors identify them and the RAAS is initially engaged. Renin is therefore released, activating aldosterone and angiotensin-II in the process. Angiotensin-II and aldosterone reabsorb sodium ions in the nephron tubules. Aldosterone and angiotensin-II release are reduced, water absorption increases, and the sodium ion level returns to normal. A chemical element with the atomic number 11 and the letter Na is sodium (derived from the Latin natrium). It is an extremely reactive, delicate silvery-white metal. Sodium is an alkali metal since it is in group 1 of the periodic chart.
learn more about sodium here:
https://brainly.com/question/24010534
#SPJ4
