Cytoplasmic reorganisation, Biology

Assignment Help:

Cytoplasmic Reorganisation

Meiosis is also associated with major reorganisation of the cytoplasm of MMCs and microspores. Microspore mother cell shows high metabolic activity. As meiosis is initiated, the synthetic activity of the cell is reduced. The rate of synthesis of RNA and proteins is drastically reduced. The cell goes through dedifferentiation. The ribosome population of the cell comes down significantly. Even the mitochondria and plastids undergo dedifferentiation, that is, they lose most of the internal membrane system and become spherical bag-like structures. However, small pockets of cytoplasm (consisting 10-20 percent of the total cytoplasm) gets enclosed by membranes and these pockets do not undergo the reorganisation that occurs in the remaining part-of the cytoplasm. Towards the end of meiosis, the microspores restore the synthetic activity. The synthesis of RNA and proteins is initiated, the ribosome population of the cell is restored and the mitochondria and plastids re-differentiate to their normal configuration with internal membrane system and regain their original shape.


Related Discussions:- Cytoplasmic reorganisation

How is hemophilia treated, Q. How is hemophilia treated? Why is hemophilia ...

Q. How is hemophilia treated? Why is hemophilia rare in females? Hemophilia is medically treated with administration of factor VIII in case of hemophilia A or of factor IX in c

What are the disadvantages of mucoperiosteal flap, What are the Disadvantag...

What are the Disadvantages of mucoperiosteal flap More traumatic - flap is raised  Sutures are required and the next procedure of impression is delayed till afterthe suture

Urology., what is the effect of KClO4 on the kidneys in the nephrotic syste...

what is the effect of KClO4 on the kidneys in the nephrotic system?

Solitary and colonial forms, Solitary and Colonial Forms Animals may l...

Solitary and Colonial Forms Animals may lead their lives either like individuals or in groups. While they exist as individuals, they are termed as solitary, but if they live i

What is Bile salts , Bile salts or bile acids are polar derivatives of...

Bile salts or bile acids are polar derivatives of constitute and cholesterol the major pathway for the excretion of cholesterol in mammals.  In the liver, the cholesterol is circul

List the steps of mitosis, Q. List the steps of mitosis and briefly describ...

Q. List the steps of mitosis and briefly describe what happens in each.

Calculate the volume of a 25% urethane, Assume that the blood volume of a r...

Assume that the blood volume of a rabbit is 0.5 liters. If the effective dose of the anesthetic urethane is 10 µgrams/ml of blood, calculate the volume of a 25% urethane solution t

What is radiographic template, What is Radiographic Template Radiograp...

What is Radiographic Template Radiographic Template : You should always use it while taking a panoramic radiograph of the patient. It is done to counter the effect of magnific

External ear, EXTERNA L EAR - It is an oval shaped, some what funne...

EXTERNA L EAR - It is an oval shaped, some what funnel like, skin covered flap of elastic cartilage and muscles. It's outer stiff ridge is called hellix. Lower flexibl

How do they affect the processing of genetic information, Q. What are intro...

Q. What are introns, and how do they affect the processing of genetic information? Introns, a feature of eukaryotic DNA, are intervening stretches of DNA lying between the exon

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd