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

Metabolism of pollen tubes, Metabolism of Pollen Tubes Pollen grains ...

Metabolism of Pollen Tubes Pollen grains contain auxins, and gibberellins which are known to be involved in post- pollination enlargement of the ovary and the development of

Explain some feeding considerations or nutrition support, Explain some Feed...

Explain some Feeding Considerations or Nutrition Support? The preferred route for feeding the patient should be oral intake1 via the utilization of gastrointestinal tract. If o

Procedures for diagnosis - nucleic acid hybridization, Nucleic acid hybridi...

Nucleic acid hybridization: This is a process by which a suitably labeled DNA or RNA from a known infectious agent is used to probe its complementary sequence unique to t

Explain pullulan, Pullulan Pullulan is a water soluble edible microbial...

Pullulan Pullulan is a water soluble edible microbial polysaccharide consisting of Maltotriose units (α 1 → 6), as shown in  the figure 2.12. It is produced by yeast  Aureobasi

Explain stem cell therapy, Stem Cell Stem cell therapy could enable ind...

Stem Cell Stem cell therapy could enable individuals to survive and contribute their alleles to the gene pool who might not have already done so thus increasing genetic diversi

Which statement is false, Which is FALSE? Diastereomers: Select one: ...

Which is FALSE? Diastereomers: Select one: a. Have the same molecular weight b. Have the same connectivity c. Are mirror images d. All of the above e. None of the

Transparency - aquatic habitats, Transparency - Aquatic Habitats Trans...

Transparency - Aquatic Habitats Transparency affects the extent of light penetration. It is indirectly related to turbidity. Suspended particulate matters such as clay, silt a

What are the capillaries of the vascular system, What are the capillaries o...

What are the capillaries of the vascular system? Capillaries are small blood vessels that perform exchange of substances among the blood and the body tissues. Capillaries are n

Production of organic material for the energetic metabolism, Q. How are bac...

Q. How are bacteria classified as per the production of organic material for the energetic metabolism? Most bacteria are heterotroph they do not produce their own food, there a

Describe metabolism, Q What is metabolism? Metabolism is the set of che...

Q What is metabolism? Metabolism is the set of chemical and physical processes upon which the life of the cells of a living being depends.

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