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

A light microscope with unlimited resolution, Theoretically you can build a...

Theoretically you can build a light microscope with unlimited magnification, but can you build a light microscope with unlimited resolution? Why or why not? (Hint: what really cont

State in brief about posterior maxilla, Posterior Maxilla Posterior max...

Posterior Maxilla Posterior maxilla has very poor quality of bone demanding special consideration in implant placement:  Increasing the number of implants to decrease the cr

How to alternately donating and accepting ions, Select all that are true or...

Select all that are true or correct regarding a buffer: alternately donating and accepting ions a set of chemicals that work together to resist pH change often a weak acid or base

Explain about the calcium and hypertension, Explain about the Calcium and H...

Explain about the Calcium and Hypertension? Chronic inadequate intake of calcium may play some role in etiologies of hypertension. Calcium deficiency has been linked to hyperte

What is cyanotic spells, What is Cyanotic Spells ? Hypercyanotic or Cy...

What is Cyanotic Spells ? Hypercyanotic or Cyanotic spell is a pediatric emergency, which requires prompt recognition, and intervention to prevent disabling cerebro-vascular i

List the major chemical changes occurring in food, Q. List the major chemic...

Q. List the major chemical changes occurring in food? The major chemical changes occurring in food are lipid oxidation leading to rancidity, loss of vitamins and degradation

Pulse wave doppler, Pulse wave  transducer has one Doppler  crystal. This c...

Pulse wave  transducer has one Doppler  crystal. This crystal emits a short burst of ultrasound at a certain frequency [PULSE REPETITION FREQUENCY (PRF)].  The ultrasqund is reflec

What would be the progeny of these crosses, Suppose that you are raising Do...

Suppose that you are raising Downton wombats, carefully because they bite when teased.You notice that some of your wombats have white spots, whereas others have solid coats. What t

Economically important fermentation products-beer, Normal 0 fal...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

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