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

What is the function of the right ventricle, What is the function of the ri...

What is the function of the right ventricle? To where does the right ventricle pump the venous blood? The function of the right ventricle is to get venous blood from the right

Determine recommended nutrient intakes by selenium, Determine recommended n...

Determine recommended nutrient intakes by selenium? The FAO/WHO 2004 recommendation for nutrient intake for selenium by groups is given in Table. How do these recommendations c

Do moulds need water for growth, Do moulds need water for growth? Place...

Do moulds need water for growth? Place a spoonful of dry cereal like as rice or oatmeal in a sterile culture dish. Place a like amount of the similar cereal cooked in another c

Massaging and tumbling techniques in meat products, M a s s a g i n ...

M a s s a g i n g and tumbling techniques To improve the desirable characteristics of meat products massaging and tumbling techniques were developed. Massaging involves

Water absorption and transpiration, Water Absorption and Transpiration ...

Water Absorption and Transpiration The rate of water absorption is controlled by the rate of transpiration. A high water potential in the atmosphere would reduce water loss fr

What is the result of post myocardial infarction ventricular, What is the r...

What is the result of Post Myocardial Infarction Ventricular ? Results: Hospital mortality may be as high as 30 per cent. This depends on the extent of infarction and- pre-op

What process causes oxygen to pass from the alveoli, What process causes ox...

What process causes oxygen to pass from the alveoli into the lung capillaries? Diffusion is the process by which oxygen passes from the alveoli to the lung capillaries.

Radiobiology, Radiobiology : This is the study of effects of radiations on ...

Radiobiology : This is the study of effects of radiations on living organisms. Radiobiology is a branch of science which concerned with the action of ions. Radiobiology is the radi

Sex, how to do sex ?

how to do sex ?

Temperate deciduous forest - ecosystem, Temperate deciduous forest - Ecosys...

Temperate deciduous forest - Ecosystem The temperate forests are characterised by a moderate climate and broad-leafed deciduous trees, which shed their leaves in fall, are bar

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