Answer:
Crossing over is essential for the normal segregation of chromosomes during meiosis. Crossing over also accounts for genetic variation, because due to the swapping of genetic material during crossing over
Explanation:
Answer: Crossing over is very important.
Explanation:
When crossovers acour in genectics they add more verietty to the next generations.
Which of the following correctly ranks these three categories from least dense to most dense?
A. Earths crust, human beings, earths atmosphere
B. Human beings, Earth’s crust, earths atmosphere
C. Earths atmosphere, human beings, earths crust
Answer: C
Explanation: Earth's atmosphere isn't very dense because it is made of air, which floats. Human beings are denser then air since they are solid, but not as dense as Earth's crust, which is rocky and the densest out of the three.
Is Cc a dominant or a recessive?
Answer:
C is a dominant allele, c is recessive. Cc is heterozygous dominant.
Which part of your integumentary system is found on the outside of your body? *
a. Epidermis
b. Keratin
c. Dermis
d. Melanin
Answer:
The correct answer is a. Epidermis.
Explanation:
The skin is made up of two layers that have different structure and origin: epidermis and dermis, which are closely related. The epidermis is the most superficial part of the skin and is made up of a keratinized flat stratified epithelial tissue, where several layers or strata can be seen that, depending on their greater or lesser development, allow the skin to be classified into thick and thin. The thick skin is on the palms of the hands and the soles of the feet and is characterized by a thick layer of keratin and by having a so-called lucid layer that does not exist in thin skin. Thin skin also has keratin, but the thickness of the keratin layer is much less. The epidermis is separated from the dermis by a limiting membrane, the basement membrane, which measures 50-70mm thick and is attached to the dermis by reticular fibrils that show axial periodicity.
HELP!! I'm confused!
Answer:
A
Explanation:
BTW WHICH GRADE U R IN
PLEASE MARK ME AS BRAINLIST
Answer:
I'm pretty sure it's A
Explanation:
hi can someone please help
Sarah and Thomas are thinking about having kids. They are concerned that because Thomas’s father was diagnosed with cystic fibrosis last year, it could run in the family. Cystic fibrosis is a recessive genetic disorder which affects the respiratory system. Both Thomas and Sarah get tested for the recessive allele (f), with the results indicating that they are each carriers of the disorder (a genotype of Ff).
Is it possible for Sarah and Thomas to develop cystic fibrosis?
It is not possible for Sarah and Thomas to develop cystic fibrosis but it would be possible for one of their children to inherit it. Both Sarah and Thomas are heterozygous and in a heterozygous pair of alleles the dominant allele is the one that will present. Because Sarah and Thomas both have the heterozygous allele combination Ff they are carriers which means that they will not experience symptoms of cystic fibrosis but they could pass cystic fibrosis onto one of their children.
Abiotic Factors + Biotic Factors =
Answer:
Examples of abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem. These are obtained from the biosphere and are capable of reproduction. Examples of biotic factors are animals, birds, plants, fungi, and other similar organisms.
Which step of an arson investigation involves ensuring that no one harms the evidence?
A.
observation
B.
preservation
C.
coordination
D.
security
E.
safety
What is the relationship between cells and tissue?
Answer:
In the human body, cells are the basic units of life. Groups of cells working together for a specific function form tissues. Organs are two or more tissues operating together. Even separate organs work together, forming body systems.
Viruses, such as influenza, are often spread through droplets made when infected people cough, sneeze, or talk. After a virus infects a new host, it begins to reproduce. Which statement about viral reproduction is
correct?
A virus can only use a host to reproduce if the host cell lacks a cell membrane.
O A virus must complete interphase before entering mitosis.
A virus depends on the host to reproduce, because the vvirusvirus does not contain DNA or RNA.
A virus cannot reproduce on its own and depends on the host cell
Answer:
C
Explanation:
The small living organism which has the outer protein layer and inner genetic material is called a virus. These viruses infect animals and plants both.
A virus can have any of the following as a genetic material:-
RNADNAThe virus can infect the host and take over his genome to replicate his own genetic material. This genetic material has the sequence which causes the infected protein and the infect the host.
Hence, the suitable answer to this question is D, that is:-a virus cannot reproduce on its own and depends on the host cell.
For more information, refer to the link:-
https://brainly.com/question/20489548
Help asap....How do human cells, a bacterial cell, and a virus compare in size?
Answer:
Explanation:
Answer: The smallest bacteria are about 0.4 micron (one millionth of a meter) in diameter while viruses range in size from 0.02 to 0.25 micron.
I HOPE THIS HELPS!! OvO
What causes some hurricanes to be more damaging than others? Explain.
Answer:
To put it simply, warmer temperatures makes for more severe hurricane seasons. Technically, it's the temperature of the Atlantic Ocean's surface water that leads to wetter hurricanes that bring more rain on land.
Explanation:
Answer:
Warmer Temperatures
Explanation:
Warmer temperatures lead to wetter hurricanes that bring more rain to the land.
What is the greatest eliminator of a species in terms of habitat destruction?
А plowing of grasslands
B deforestation in tropical areas
С destruction of coral reefs
D destruction of wetlands
Answer:
i think B.
Explanation:
That destroys a habitat for many species
a student observed a difference in the activity level of fish at a pet store. the fish in the aquarium near the window are swimming around more quickly than the fish in an aquarium placed in the back of the store. The student forms a hypothesis about the effect of sunlight on fish activity levels and arranged to conduct and experiment. Which variable could be an independent variable in the student's experiment?
1.) type of fish sold
2.) speed of swimming fishes
3.) amount of time fish were active
4.) temperature of water in fish tank
Answer: 4
Explanation:
The red shifts of quasars and connected galaxies can be different by billions of light-years.
True
False
Answer: True
Explanation:
Its true.
Hope it helped you.
If a muscle cell of a typical organism has 32 chromosomes, how many chromosomes will be in a gamete of that same organism
Answer:
16. Gametes are haploid cells meaning half.
Explanation:
If one parent has type B blood and the other type O blood what percentage of the child's blood will be B, O, A?
Answer:
If one parent has blood type B and the other parent has blood type O, the percentage of the blood type of the offspring will depend on the genotype of the parent with blood type B.
Explanation:
Knowing the blood type of the offspring of the cross between parents with blood type B and O raises two possible scenarios, depending on whether the genotype of the parent (type B) is B|B or B|O.
Blood type is an inherited trait and is characterized by the presence or absence of surface antigens A and B in the red blood cells, which genetically behave as co-dominant traits.
Blood type A contains antigen A and its genotype can be A|A or A|O. Blood type B contains the B antigen, whose genotype can be B|B or B|O. Blood type AB contains both antigens and a single A|B genotypic expression. Type O blood lacks surface antigens, and is the recessive trait so its genotype is O|O.Scenario 1: Parent with genotype B|B.
In this case, knowing that the genotype for type O is always O|O, all offspring would be of blood type B, genotype B|O.
B|B X O|O
Alleles B B
O B|O B|O
O B|O B|O
100% of the offspring would be of blood type B.
Scenario 2: Parent with genotype B|O.
In this case, 50% of the offspring will have blood type O and 50% B.
B|O X O|O
Alleles B O
O B|O O|O
O B|O O|O
In no scenario would offspring of blood type A be possible.
Punnett squares??
I really don't understand this please help!!
Answer:
omg I just did these in class. the answer is like this:
the boxes are: (top left corner) Bb, (top right corner) bb, (bottom left corner) Bb, (bottom right corner) bb
1.
a. potential genotypes: Bb (50%), bb (50%)
b. potential phenotypes: pls dont take my word for this part, bc im not that good here, but I think its brown eyes (50%), blue eyes (50%)
Hope this helped!
Decide whether the scale factor will produce an enlargement or a reduction. Scale Factor = 5/2. Enlargement Enlargement Reduction
Answer:
Enlargement
Explanation:
Dilation is the enlargement or the reduction in the size of an object.
Enlargement is increase in size of an object. A figure is said to be enlarge if it is larger than the original figure.
Reduction is the decrease in size of an object. A figure is said to be reduced if it is smaller than the original figure.
The scale factor determines if it is either an enlargement or a reduction. If the scale factor is less than one then it is a reduction whereas if the scale factor is greater than 1 it is an enlargement.
Since it is a scale factor of 5/2, it is an enlargement.
please answer this question
Answer:
None of these.
Explanation:
None of these seem right to me. If that is not the answer I would go with an increase of erosion in the soil.
Which of the following is NOT a synthetic material? *
Concrete
O Plastic
O Polyester
Wood
What is photosnphese
identify the structure in blood that transports oxygen to body cells.
Answer:
Red blood cells
Answer:
Hemogoblin
Explanation:
"The protein inside (a) red blood cells that carries oxygen to cells and carbon dioxide to the lungs is (b) hemoglobin. Hemoglobin is made up of four symmetrical subunits and four heme groups. Iron associated with the heme binds oxygen."
Why did the recessive trait for shortness come back in the second generation of Mendel's cross of tall and short plants?
Answer:
Mendel called the visible form the dominant trait and the hidden form the recessive trait. In the second generation, after plants were allowed to self-fertilize (pollinate themselves), the hidden form of the trait reappeared in a minority of the plants.
PLEASE SAVE MEEEEEE!!!!!!!
Which of the following best describes how crossing over occurs during meiosis?
A) During prophase I, homologous chromosomes are lined up and pulled apart to opposite poles.
B) During prophase II, chromosomes overlap and sections of each chromosome switch places.
C) During prophase I, segments of chromatids are exchanged between homologous chromosomes.
D) During prophase II, sister chromatids trade places with each other before metaphase begins.
The best and most correct answer among the choices provided by your question is the second choice or letter B.
Crossing over occurs during meiosis when chromosomes overlap and sections of each chromosome switch places in prophase II.
Answer:
And this one too
How's it
Lab: Interdependence of Organisms
Assignment: Lab Report
Active
Answer:
Record your data in the table below. Be sure to record any qualitative observations in your lab notebook.
Heights (cm)
Week one
(before adding worms) week 3 week 5
Plant 1 10cm 22cm 49cm
Plant 2 9cm 23cm 47cm
Plant 3 8cm 20cm 49cm
Plant 4 9cm 22cm 50cm
Plant 5 10cm 22cm 47cm
Plant 6 8cm 23cm 52cm
Control Group Average 9cm 22cm 49cm
Plant 1 8cm 24cm 50cm
Plant 2 9cm 28cm 60cm
Plant 3 8cm 26cm 49cm
Plant 4 8cm 25cm 53cm
Plant 5 8cm 27cm 58cm
Plant 6 7cm 26cm 60cm
Experimental Group Average 8cm 26cm 55cm
Difference in Average Heights
(Experimental – Control) -1 cm 4cm 6cm
Explanation:
I got 100percent
Answer:
Part 1:
You need to include a
• Title: Lab- Interdependence of Organisms
• Purpose: Measure the effect the worms have on plant growth in the population
• Question: Will adding worms to the soil affect the growth of plants?
• Hypothesis: If plants grow in soil containing worms, then the plant growth will be greater because worms help decompose organic matter and distribute it through the soil in a form that plants can use.
• Variables:
Independent- number of worms
Dependent- plant growth
Constant- the type of plant, amount of sunlight, etc.
Control-
Part 2: Materials and Procedure
Supplies- two trays, lima bean seeds, worms, location with sunlight, black marker, meter stick, graduated cylinder, water
Procedure
1. label trays for each group, control and experimental group
2. fill each tray with 6 to 7 cm of soil
3. add six lima bean seeds to each of the trays and label them 1-6
4. add 50 mL of water to each tray evenly
5. leave them in sunlight for a week
6. Measure each of the sprouts in each tray
7. Record data and average the heights for each group, control and experimental, as well as find the difference
8. add worms to the experimental group
9. after three weeks measure each of the plants, record the data, average the height, and record the difference
10. after five weeks measure each of the plants, record the data, average the height, and record the difference
Part 3: Data
Week 1:
Control
10, 9, 8, 9, 10, 8 avg. 9
Experimental
8, 9, 8, 8, 8, 7 avg. 8
Week 3:
Control
22, 23, 21, 22, 22, 23 avg. 22
Experimental
24, 28, 26, 25, 27, 26 avg. 26
Week 5:
Control
49, 47, 49, 50, 47, 52 avg. 49
Experimental
50, 60, 49, 53, 58, 60 avg. 55
Part 4: Analysis and Conclusion
Analysis: discuss the relationship between the independent independent variable, explain trends in the data, describe data points to explain the experiment outcome, interpret statistics, and interpret graphs
Conclusion: determine whether the hypothesis was supported, restate the hypothesis, state whether it is correct or incorrect, and explain.
Explanation:
Just did it
Match the category of aquaculture systems to its description
Extensive
A. characterized by very limited input by the culturist
B. Characterized by extremely high stocking density
C. Characterized by higher stocking density
Answer:
A is the correct answer
Four substances are important for both photosynthesis and cellular respiration: oxygen, glucose, carbon dioxide, and water. What is the best explanation for how for both processes use these substances?
1.) both produce atp at some point
2.) both make glucose at some point
3.) both require oxygen gas at some point
4.)both include the keens cycle at some point
Answer:
The answer is 4, I got this correct on a Plato test on edmentum
Explanation:
Photosynthesis and cellular respiration are the metabolic processes, in which organisms gain energy from the metabolization of oxygen, glucose, carbon dioxide, and water.
The correct answer is:
Option A. both produce ATP at some point
Photosynthesis is the process of producing glucose and evolving oxygen, whereas cellular respiration is the process of breaking glucose to yield energy, such as:
In photosynthesis, the light-independent reactions or Calvin cycle involves the generation of ATP and NADPH. In cellular respiration, Kreb's cycle is involved in the generation of ATP and NADH, which then enter the electron transport chain.Thus, the process has similar raw materials that are metabolized to generate ATP at some point.
Therefore, option A is correct.
To know more about photosynthesis, refer to the following link:
https://brainly.com/question/1388366
How does sugar cross the cell membrane to get into a cell
Answer:
Molecules, like sugars, reach the carrier proteins in the membrane by diffusion and are then moved across the membrane from a region of high concentration to a region of low concentration.
MARKING PEOPLE AS BRAINLIST
Research Careers in Science - Geneticist. Find out what you can on how someone would study to be a geneticist.
Answer:
Biotech Sales/Marketing. Clinical Research Associate. Dietitian/Nutritionist* ...
Bioinformatician. Community College Professor. ...
Bioethicist. Intellectual Property/Patent Attorney*
Independent Clinical Researcher. Physician/Clinical Geneticist.
Audiologist*^ Biocurator. ...
Clinical Laboratory Geneticist* Medical Science Liaison.
Explanation: does this help? Hope it does have a blessed day.
Brainlist? Actually you don't have to only if you want.
Someone can become a geneticist when they complete a bachelor's degree program, have Doctor of Medicine or Doctor of Osteopathic Medicine (medical school), and then (after earning a doctoral degree), will be able to participate in medical residency in genetics for specialized training.
Hope this helps! :D
