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

Polysaccharides, PO L YSACCHARIDES Polysaccharides are complex car...

PO L YSACCHARIDES Polysaccharides are complex carbohydrates. Polysaccharides are also called glycans. These are insoluble in water. Polysaccharides are not swee

Structure of the pancreas, Describe the structure of the pancreas. How is t...

Describe the structure of the pancreas. How is the pancreas modified to carry out its various functions? How does the human pancreas compare to that of the fetal pig?

Define hormonal imbalance as a factor for obesity, Define Hormonal imbalanc...

Define Hormonal imbalance as a factor for obesity? Certain diseases associated with secretion of hormones, e.g., hypothyroidism, hypogonadism and Cushing's syndrome exhibit obe

Symptoms of enteropathogenic escherichia coli, Symptoms: The E. coli gastro...

Symptoms: The E. coli gastroenteritis syndrome is caused by the ingestion of 10 6 -10 10 viable cells/g that must colonize the small intestine and produce  enterotoxin. The syndr

Skeleton, what is the biological significance of skeleton

what is the biological significance of skeleton

Injury resulting from an accident, Injury Resulting From an Accident ...

Injury Resulting From an Accident Accident was described earlier which meant that accident was a sudden event. However, several legal opinions favored exclusion of suddenness

Genetics, Ask question importance of genetics in human life #Minimum 100 w...

Ask question importance of genetics in human life #Minimum 100 words accepted#

Nutrition, what is the mode of nutrition in tape worm

what is the mode of nutrition in tape worm

State the process of rna editing, Which of the following is a true statemen...

Which of the following is a true statement regarding the process of RNA editing? A. RNA editing changes the sequence of the mRNA message thereby permitting for enhance in prote

ACTINOMYCETES, WHAT ARE THE DIFFERENT CULTURE MEDIAS USED FOR ISOLATION OF ...

WHAT ARE THE DIFFERENT CULTURE MEDIAS USED FOR ISOLATION OF ACTINOMYCETES?

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