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 can the enzymes be classified, How can the enzymes be classified? Expla...

How can the enzymes be classified? Explain giving examples. Based on structure, enzymes can be classified into monomeric enzymes and oligomeric compounds. Monomeric enzym

Define the v2 receptor antagonist, Define the V2 receptor antagonist A ...

Define the V2 receptor antagonist A new drug named ANTI-V2R has been developed that is a V2 receptor antagonist.  When ANTI-V2R binds to a V2 receptor, there is no binding of v

The protective structures of the central nervous system, What are the prote...

What are the protective structures of the central nervous system present in vertebrates? In vertebrates the brain and the spinal cord are protected by membranes, the meninges,

What do you mean by transgenic food, Q. What is transgenic food? The Tr...

Q. What is transgenic food? The Transgenic beings are animals, microorganisms and plants that contain recombinant DNA that is genes from other microorganisms, plants or animals

Define the left cerebral cortex, Which of the following is true for a prima...

Which of the following is true for a primary motor cortex (M1) corticospinal interneuron that produces action potentials during movements of the big toe of the right foot? A. A

List out the principles of food preservation, List out the Principles of Fo...

List out the Principles of Food Preservation? All food preservation methods are based upon the general principle of preventing or retarding the causes of spoilage caused by mic

Explain the metabolic aberrations of underweight, Explain the Metabolic Abe...

Explain the Metabolic Aberrations of Underweight? When energy intake falls below the minimal requirements, the body responds with an orderly physiologic adaptation involving th

Define sweetness as a function of sugar, Define Sweetness as a Function of ...

Define Sweetness as a Function of Sugar? Sweetness is the most recognized functional property of sweeteners. Our preference for sweetness, regarded as innate, is apparent soon

Determine the term epitheliomuscular cell, Determine the term Epitheliomusc...

Determine the term Epitheliomuscular cell. Cells which line outer surface of cnidarians. These cell have two functions: first is to form the outer body covering of animal, seco

Zoology, differences of plants and animals in terms of form and structure?

differences of plants and animals in terms of form and structure?

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