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

Explain interferon alfa, Interferon alfa In about one third of adults a...

Interferon alfa In about one third of adults and children with chronic hepatitis B, treatment with interferon alfa-2b leads to loss of HBeAg, return to normal aminotransferase

Explain functional property of emulsification, Explain Functional property ...

Explain Functional property of Emulsification Mode of action  Proteins stabilize fat emulsions Food system Sausages, soups, cakes, salad dressings, infant foods

Ask, what are the names of karyotypes?

what are the names of karyotypes?

Define ascending type of paper chromatography, Define ascending type of pap...

Define ascending type of paper chromatography? The ascending type consists in dipping the lower end of the paper containing the sample spots into the solvent so that it is abov

Define nutritive aspects of food constituents, Define Nutritive aspects of ...

Define Nutritive aspects of food constituents and effect of processing and handling? Nutrient stability; effects on nutrients of agricultural practices, handling, processing an

What are imago and nymph, Q. What are imago and nymph? Nymphs are larva...

Q. What are imago and nymph? Nymphs are larvae of hemimetabolic insects (like grasshoppers). They are very similar to the adult insect although smaller, In holometabolic insect

What is molecular formula of the compound, A solid compound was found to co...

A solid compound was found to contain 42.11% C, 51.46%O and 6.43% H by weight. The molecular weight of the compound was 341. What is the molecular formula of the compound?

Determine the concept of neuropsychological test, Determine the concept of ...

Determine the concept of neuropsychological test A neuropsychological test therefore is defined as behavioural procedure that is particularly sensitive to the condition of the

Destinations of the organic material fabricate by producers, Q. What are th...

Q. What are the destinations of the organic material fabricated by the producers? The Part of the organic material synthesized by the producers is consumed as energy source for

Nitrogen control of nitrogen assimilation, Nitrogen Control of Nitrogen Ass...

Nitrogen Control of Nitrogen Assimilation N 2 -fixer like Klebsiella pneumoniae and Nostoc can grow with N 2 , NO - 3 or NH + 4 as nitrogen source. You would like to know

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