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mash [69]
1 year ago
15

The switch from mitosis to meiosis in spermatogenesis is regulated by _____ levels of _______ and this is induced by _________.

Fill in the blanks.
Biology
1 answer:
jenyasd209 [6]1 year ago
8 0

The switch from mitosis to meiosis in spermatogenesis is regulated by Follicle-stimulating hormone (FSH) levels of Luteinizing hormone (LH) and this is induced by Glial cell line-derived neurotrophic factor (GDNF).

<h3>How does FSH, LH and GDNF help in spermatogenesis?</h3>
  • The development and maintenance of spermatogenesis is dependent on the pituitary gonadotropins; FSH and LH.
  • FSH works on Sertoli cells and LH on Leydig cells through their receptors FSHR and LHR respectively.
  • Self-renewal and differentiation of the spermatogonial stem cells (SSCs) is regulated by soluble factors produced by the somatic Sertoli cells. One of these is glial cell line–derived neurotrophic factor (GDNF).

Learn more about mitosis and meiosis here:

brainly.com/question/18602191

#SPJ4

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The diastolic blood pressure represents the?
Nesterboy [21]

The diastolic pressure refers the  two values are recorded during the measurement of blood pressure.It is the number or the bottom number indicates the pressure in the arteries when the heart rests between beats.

Less then 80 are the normal diastolic blood pressure. Prehypertension which is indicaated by the blood pressure between 80 to 90. The first, systolic pressure, which represents the peak arterial pressure during systole. The second, that represent minimum arterial pressure during diastole.

the force the heart exerts on the walls of the arteries in between beats can be easily measured by the diastolic blood pressure .Diastolic blood pressure is mainly determined by the total arterial peripheral resistance which majorly influence  Arterial elastance and compliance.

To learn more about diastolic pressure here

brainly.com/question/15175692

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3 0
2 years ago
Human embryos have tails, which become tail bones before birth. Tails also appear in fish, reptiles, amphibians, birds, and mamm
lana [24]

Answer: a close evolutionary connection between humans and many other mammals

Explanation:

8 0
2 years ago
Which of these is an exothermic reaction?
stellarik [79]

I think it might be C because when you are rubbing your hands energy is not released it’s absorbed, cooking an egg the heat from the pan is absorbed by the egg, photosynthesis the plant is taking in energy, and in cellular respiration you release energy

6 0
2 years ago
Which activity happens during the M phase?
steposvetlana [31]
The answer is cell division
5 0
3 years ago
Read 2 more answers
The mitotic spindle consists of two types of microtubules: kinetochore microtubules and nonkinetochore microtubules. In animal c
Blababa [14]

Answer:

The correct answer will be

1. Lengthen

2. Lengthen, shortens

3. Disassemble

Explanation:

There are three types of microtubules present during cell division: kinetochore, aster and polar microtubules.  

1. During prophase: all types of microtubules grow out at their positive(+) ends which functions to pull and push the sister chromatids apart towards opposite poles so they lengthen.

2. During anaphase : non-kinetochore microtubules- polar microtubules polymerization takes place at their (+) ends which causes the spindle fibres to move apart  while kinetochore microtubules which have been attached to the kinetochores of chromosomes shorten at their (+) ends and  motor proteins travel to (-) end because of which sister chromatids move towards the spindle poles.

3. During telophase: non-kinetochore microtubules depolymerize or disassembles.

Thus, 1. Lengthen, 2. Lengthen, shortens and 3. Disassemble are the correct options.

7 0
2 years ago
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