Principles governing cleavage, Biology

Assignment Help:

Principles Governing Cleavage

a) The nucleus and mitotic achromatic figure tend to occupy the centre of active cytoplasmic density of the dividing cells, e.g., in isolecithal eggs or microlecithal eggs, the spindle is formed centrally in the cell while in the telolecithal eggs, and it is formed nearer the animal pole.

b) Each new cleavage furrow tends to intersect the plane of the preceding cleavage furrow at right angle.

c) The cells or blastomeres tend to divide into two equal sized daughter cells unless yolk is unevenly distributed.

d) Free sides of the blastomeres tend to become rounded.


Related Discussions:- Principles governing cleavage

Describe chemical changes in fruits and vegetables, Describe Chemical chang...

Describe Chemical changes in fruits and vegetables The detailed chemical changes that occur when fruits and vegetables are boiled in water or steamed, canned, dried or frozen,

Define the structure of d and l isomerism, Define the Structure of D and L ...

Define the Structure of D and L isomerism? The prefix D or L are used to refer to the configuration of the carbon next to the primary alcoholic group or in other words, the con

Define measuring body composition- total body potassium, Define measuring b...

Define measuring body composition- Total body potassium? It applies the' concept that body cells contain a constant amount of potassium and that its measurement is theref

Neuropsychological screening of adults, Neuropsychological screening of adu...

Neuropsychological screening of adults Normally, a neuropsychological examination explores in depth an individual's performance in a wide range of functional domains. There are

Explain the potential benefits of micro nutrients, Explain the Potential Be...

Explain the Potential Benefits of micro nutrients? The potential benefits of micro nutrients should also be taken into account when the nutrient allowances are defined for olde

Show six bad listening habits, Discuss six bad listening habits. Which do y...

Discuss six bad listening habits. Which do you think is the biggest challenge for you personally?

Can you explaon about aortography, Q. Can you explaon about Aortography? ...

Q. Can you explaon about Aortography? Visualization of the aorta and its branches is possible by several modalities today. Apart from angiography, aorta can also be visualized

Procedure for testing vanaspati and rancidity in ghee, Procedure for testin...

Procedure for testing Presence of Vanaspati and Rancidity in Ghee? Carry out the steps enumerated herewith for conducting this exercise. For Vanaspati Checking: 1. Take 5

Types of mode of nutrition, what is the mode of nutrition of fungi,bacteria...

what is the mode of nutrition of fungi,bacteria and man

Ringworm, R i n g w o r m It is also known as dermatophytosis re...

R i n g w o r m It is also known as dermatophytosis resulting in alopecia, scab formation and ring like lesions in the affected body parts. Eti o logy: Zeop

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