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

How is the early diagnosis of genetic diseases usually done, How is the ear...

How is the early diagnosis of genetic diseases usually done? The Genetic disease may be diagnosed in the prenatal period by karyotype analysis, in case of aneuploidies, or by D

Show the symptoms and treatments of hepatitis b, Q. What are the modes of t...

Q. What are the modes of transmission, main signs and symptoms and treatments of hepatitis B? The Hepatitis B is a disease caused by a DNA virus. The transmission is by blood (

What are social dangers, Members belonging to the scientific community fear...

Members belonging to the scientific community fear the misuse of this therapy leading to dangerous consequences.  People may try to insert the desired gene, for example, the gene f

Difference between dominant epistasis and recessive epistasi, What is epist...

What is epistasis? What is the difference between dominant epistasis and recessive epistasis? The Epistasis is the gene interaction in which a gene (the epistatic gene) able to

Explain the uses of isp in seafood products, Explain the Uses of ISO in Sea...

Explain the Uses of ISO in Seafood products  Seafood products  The most significant application in this category is the use of ISP in fish sausage and surimi based restructu

Muscle cells, explain why it is essential that muscle cells, during anaerob...

explain why it is essential that muscle cells, during anaerobic respiration, convert pyruvic acid(pyruvate) into lactic acid, even though the conversion results in an accumulation

Optional use values of biodiversity, Q. Optional use values of biodiversity...

Q. Optional use values of biodiversity? Optional values are associated with potential use in the future. Accordingly one opts to conserve biodiversity based on the hope that it

Responsible for the regulation of blood glucose, The pancreas produces insu...

The pancreas produces insulin, a hormone that is specifically produced in the beta cells of the pancreas and it is responsible for the regulation of blood glucose. After carefull c

Selection according to endemic species richness, An alternative approach ha...

An alternative approach has been to identify areas with the highest number of endemics or species with a restricted geographical range. Assessments of this nature have been very of

Explain the principle of alkaline copper reduction method, Explain the Prin...

Explain the Principle of alkaline copper reduction method? All sugars which contain a free aldehyde group undergo enolization when placed in hot alkaline solution. This propert

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