Homologous chromosomes may exchange segments; this is called crossing over. Crossing over increases genetic variability. When does crossing over occur?


Question 2 options:


Meiosis II



Mitosis



Both mitosis and meiosis--crossing over may occur at any time during the cell cycle.



Meiosis I


Question 3

In order for meiosis to create four, genetically different gametes, DNA replication must occur. Which of these best describes when DNA replication would occur?


Question 3 options:


prior to meiosis II



prior to meiosis I and meiosis II



prophase I in meiosis I



prior to meiosis I

Question 4 (1 point)
The embryo's development as seen here represents which processes in the development of any multicellular organism?


Question 4 options:

meiosis followed by mitosis.


mitosis and cell differentiation.


protein synthesis followed by meiosis.


meiosis and cell differentiation.

Question 5
Why do some organisms reproduce aseggsually?

Question 5 options:

To rapidly produce like offspring


To increase genetic diversity


To have a variety of offspring at the same time


To get rid of genetic problems while reproducing

Answers

Answer 1

A) Crossing over occurs in : Meiosis I ( D )

B) DNA replication would occur : Prior to meiosis I and meiosis II ( B )

C) The embryo's development represents ; meiosis and cell differentiation ( D )

D) Some organisms reproduce aseggsually ; To rapidly produce like offspring

What is Crossing over and DNA replication

Crossing over involves the swapping of genetic materials, and it occurs in prophase I of meiosis before meiosis II the crossing over of genetic materials are over. while DNA replication is the process whereby DNA make an exact copy of itself during the process of cell division and this process occurs prior to meiosis I and meiosis II

The development of an embryo in the missing diagram represents meiosis and cell differentiation.

Hence we can conclude that the answers to your questions are as listed above.

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Related Questions

Convert 650 mm Hg to kPa and atm​

Answers

Kilopascal 86.6596
atm 0.855263

two paragraphs
explaining how carbon is
transferred within and
between organisms and the
environment.

Answers

Answer:

For example, in the food chain, plants move carbon from the atmosphere into the biosphere through photosynthesis. They use energy from the sun to chemically combine carbon dioxide with hydrogen and oxygen from water to create sugar molecules.

Describe: Carbon moves from living things to the atmosphere. Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants get rid of carbon dioxide gas through a process called respiration. Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement. Organisms play an important role in the carbon cycle in the following ways: Plants absorb carbon from the environment in photosynthesis and return it in respiration. Animals obtain their carbon by eating plants; they release carbon in respiration.

Explanation:

Which biologically-based therapy uses a drug to remove toxic amounts of
metal from the blood?
A. Herbal medicine
B. Diet therapy
C. Chelation therapy
D. Orthomolecular therapy

Answers

Answer:

Your answer is C) Chelation therapy

Explanation:

Chelation therapy is a method for removing heavy metals, such as mercury or lead, from blood. It's one of the standard treatments for many types of metal poisoning. Hope this helped :)

Chelation therapy is used to remove toxic amounts of metal from the blood. So, the correct option is C.

What do you mean by Drug therapy?

Drug therapy may be defined as the process of treating, diagnosing, and preventing any specific disease with the help of chemical substances known as drugs.

Chelation therapy is given intravenously to the patients for the treatment of heavy metals exposure like mercury, lead, and chromium in the blood. After successful completion of chelation therapy, toxic heavy metals are removed via urination.

Therefore, chelation therapy is used to remove toxic amounts of metal from the blood. So, the correct option is C.

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On the Galápagos Islands, Charles Darwin observed Question 1 options: completely unrelated species on each of the islands. species exactly like those found in South America. species similar to mainland South American species. species completely unrelated to those found in South America.

Answers

We can confirm that on the islands, Charles Darwin observed species similar to mainland South American species and to those found on the other islands.

What did Darwin notice about these species?

Darwin noticed that each of these species were very similar, but possessed slightly different traits. These traits seem to perfectly fit the needs of each species for their specific island, leading to his creating the theory of evolution through natural selection.

Therefore, we can confirm that on the islands, Charles Darwin observed species similar to mainland South American species and to those found on the other islands.

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Which of the following is true about adaptation?

I. It is random.
II. It results from genetic mutations.
III. It only affects an individual in a population.

I, II, and III
I and II
II and III
I only

Answers

Answer: I and II

Explanation: so basically,  when adaptation occurs, it usually happens over a long period of time due to climate, predators, etc. because of these adversities,  Genetic mutations occur, helping that animal and its species as a whole survive, which checks number 2. number one is also correct because adaptation can not be predicted. it happens randomly at some point in time. 3 is incorrect because multiple offspring in a species could have adaptations that provide more of an advantage.

how blood clotting occurs​

Answers

Answer:

Your answer would be:
A blood clot occurs when there is damage to a blood vessel.


Explanation:
Have a great rest of your day
#TheWizzer

Answer:

Proteins in your blood called clotting factors signal each other to cause a rapid chain reaction. It ends with a dissolved substance in your blood turning into long strands of fibrin. These get tangled up with the platelets in the plug to create a net that traps even more platelets and cells.

Explanation:

hope this helps

which is a possible effect on a bay ecosystem if the clams
disappear?
(A) debris on beaches
(B) fewer game fish
(C) reduced algae growth
(D) poor water quality

Answers

Answer:

D

Explanation:

Clams naturally filter out contaminants in water

Without the clams, the water quality will drop dramatically, as the local ecosystem will lose its natural filtration system

The author probably wrote this Article in order to



























Answers

Answer:

c

Explanation:

it's the one that is most likely

1. Give two reasons why preserving biodiversity is important to humans

Answers

Answer:

hope this Wil help

Explanation:

biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services

Why is the enzyme telomerase important in some cells?.

Answers

Answer:

✒️ Answer:

Abstract. Telomerase is the enzyme responsible for maintenance of the length of telomeres by addition of guanine-rich repetitive sequences. Telomerase activity is exhibited in gametes and stem and tumor cells.

Explanation:

#CarryOnLearning

[tex]watch.some.anime[/tex]

Just answer number 3

Answers

Answer:



It’s C trust me

list 7 things that hormones regulate.

Answers

Answer:

heart rate

metabolism

mood

appetite

reproduction

sleep cycles

growth

Explanation:

1. What is the purpose of the lab? Lab for modeling water

Answers

Answer:

The purpose of a lab is to entertain people and also give them a better understanding of science and it also makes you have fun

Explanation:

I did it before

make a poem about taking care of your reproductive system​

Answers

Answer:

in a dark classroom on a friday

afternoon my teacher told me something

beautiful.

ovaries, she said, have

the same salt content as

the sea. you have

little oceans inside of you!

I imagined the protozoa, the

primordial soup, the sand,

I felt the pull deep inside of

the moon tugging life

from my body.

I felt that potential for life

crown and break beneath

my skin, and it felt beautiful,

yes, but I couldn’t stop myself from placing

a hand on my belly and thinking,

all this life will end with me.

1. What is the significance of the specific gravity of the abnormal urine?

Answers

Answer:

A very high specific gravity means very concentrated urine, which may be caused by not drinking enough fluid, loss of too much fluid (excessive vomiting, sweating, or diarrhea), or substances (such as sugar or protein) in the urine.

Explanation:

Urine specific gravity is a significant and convenient way to measure the abnormal urine. It indicates dehydration or presence of substances in the urine as in case of diabetes.

What is Specific gravity?

Urine specific gravity (USG) measures the concentration of particles which are present in the urine and the density of urine compared with the density of water. Measurement of USG is an easy way and very convenient way to know a patient's hydration status as well as the functional ability of kidneys.

Urine specific gravity falls between the range of 1.002 and 1.030 if the kidneys are functioning normally. However, if specific gravity results above 1.010 this can indicate mild dehydration in that person. The higher the number of specific gravity, the more dehydrated a person may be.

A very high specific gravity means very concentrated urine, which may be due to not drinking enough fluid, loss of too much fluid, or substances such as sugar or protein in the urine.

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Which statement describes the difference between ectothermic and endothermic animals?

Question 5 options:

Ectothermic animals live in cold climates, and endothermic animals live in warmer places.


Ectothermic animals live in the water, and endothermic animals live on the land.


Ectothermic animals have a lower body temperature than endothermic animals.


Ectothermic animals have a body temperature that is the same as their environment, and endothermic animals have a constant body temperature.

Answers

Answer:

Statement D

Explanation:

Ectothermic means cold-blooded, which means they can not generate there own heat or maintain a constant body temp.

But us as humans are Endothermic because we remain at a constant body temp, also known as warm-blooded.

Do hardwork and intelligence can be inherit or not?

Answers

Hey there!

Hardwork can't be inherited,because it's an acquired trait.(A trait which acquired by an individual in his lifetime)

Whereas, intelligent can be inherited but there might a little bit variation.

Hope it helps

Cells need energy.Give reason?​

Answers

Answer:

because cell is cell and it is cell

Answer:

Cells need energy to keep them alive. Processes such as cell division, Active transport, and protein synthesis all require energy.

Explanation:

True or false? Prokaryotic cells are significantly smaller then eukaryotic cells.


Answer: False

Answers

Answer: Cell Size. At 0.1–5.0 µm in diameter, prokaryotic cells are significantly smaller than eukaryotic cells, which have diameters ranging from 10–100 µm (Figure 3.7). The small size of prokaryotes allows ions and organic molecules that enter them to quickly spread to other parts of the cell.

Explanation:

Synthesize What instruments would you take along if you were going on a 3-month field study to measure how the weather on a mountaintop changes over the course of a season?​

Answers

The instruments which will be taken along include the following:

ThermometerPsychrometerAnemometerWind vaneBarometerRain gaugeWhat is an Instrument?

This is defined as a tool or device for doing a particular kind of work such as weather study etc.

The instruments listed above will help measure how the weather on a mountaintop changes over the course of a season.

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Which of the following diagrams illustrates the position of t3
he sun an earth on the longest day of the year i in the northern hemisphere

Answers

Answer:

please provide clean image.......

Explanation:

in your desktop ️ I can't able to see anything....

Spinal Nerve
A. have both motor neurons and interneurons
B. send impulses in two directions
C. make up the vertebra of the spine
D. contain only sensory axons​

Answers

If I’m not mistaken, I think B. Is the answer because the nerves in your spinal cord send signals from your brain into the rest of your body. So I think the answer is B. Hope this helps.

A red blood cell has a diameter of about 7 micrometer. a microscope of resolving power 240nm ,can it resolve the details of the red blood cell of size 7 micrometer​

Answers

Yes, it resolve the details of the red blood cell of size 7 micrometer​ because the microscope has more than 30 times magnification power.

What is magnification?

Magnification is the ability of a microscope to produce an image of an object at a scale larger (or even smaller) than its actual size so we can conclude that it resolve the details of the red blood cell of size 7 micrometer​ because the microscope has more than 30 times magnification power.

Learn more about microscope here: https://brainly.com/question/15744335

Question 1
Which of these correctly distinguishes mitosis from meiosis?

Question 1 options:
Mitosis occurs in germ cells and meiosis occurs in somatic cells.


Meiosis produces four 2N daughter cells; mitosis produces two 2N daughter cells.


Crossing over takes place in mitosis and not in meiotic cell division.


The number of chromosomes remains the same in mitosis and is reduced by half in meiosis.

Answers

Answer:

Crossing over takes place in mitosis and not in meiotic cell division.

Explanation:

Mitosis occurs in somatic cells and meiosis occurs in germ cells. The crossing over event takes place in meiotic cell division and not in mitosis. Meiosis produces four n daughter cells.

Which of these planets has characteristics most similar to Saturn?
Jupiter, Uranus, and Neptune
Mercury, Venus, and Earth
O Venus, Earth, and Mars
Earth, Mars, and Saturn

Answers

Jupiter, People think that the insides of them are similar to Saturn.
Jupiter, Uranus and Neptune. With Jupiter, it contains a small rocky core surrounded by hydrogen and helium, with trace amounts of various volatiles. Saturn and Neptune are gas giants, both largely comprised of hydrogen and helium. Finally, Like Saturn, Uranus has rings and moons.

Hope this helped!

Is any component more important than the others? Explain why or why not.

Answers

Answer:

hmm

E

Yeah. That's a tricky one.

What is kyphosis caused by?​

Answers

Answer:

Back Pain and Stiffness; kind of relation to Hunchback?

Explanation:

It happens when we have poor posture; positioning our arms & shoulders not how we normally position them - it can also happen when carrying heavy stuff or slouching.

Answer:

The ligaments and muscles that support the vertebrae can extend as a result of poor posture in childhood, such as leaning back in seats and carrying heavy backpacks. Kyphosis occurs when the thoracic vertebrae are pulled out of their usual position.

Explain how a mutation may affect the evolution of a species.

Answers

Answer:

Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele. Recombination also can create a new DNA sequence (a new allele) for a specific gene through intragenic recombination.

Which type of river is healthier for ecosystems?
A. channelized
B. meandering

Answers

Meandering

Explanation:

If u meander, then ur healthy

It should be Meandering as it allows water to curve and decreases velocity.

!20POINTS!
Analyze the graph and identify some factors that may contribute to the rotifer population leveling off in the absence of water fleas. Explain your answer in 1–2 sentences.

Answers

Answer:

(Leveling off = it stays the same even though it had a increasing period) When looking at the end of the graph you can see that it came back to what it was, which means the rotifers are not increasing anymore. That's because of the carrying capacity (a species' average population size in a particular habitat), and the carrying capacity in this situation is the flask. Therefore the flask has limited space.

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