Laws of cleavage, Biology

Assignment Help:

LAWS OF CLEAVAGE -

1. Sac's Law - According this law, during cleavage each blastomere to form similar blastomere. New cleavae always take place at the right angle of the first.

2. Pfluger's Law - According this during cleavage mitotic division formation of the spindle fibres proceeds in the region of less resistance.

3. Balfour's Law - According this the rate of cleavage is inversely proportionally to the amount of yolk in the egg.

Rate of cleavage = 1/amount of yolk

4. Hertwig's Law - According this the mitotic apparatus is formed in the centre of the animal pole.


Related Discussions:- Laws of cleavage

Explain the compound water, Explain the compound water? Water :  Wate...

Explain the compound water? Water :  Water is the most important compound in living cells, making up most of the bulk of living organisms. Our own bodies contain 40% - 60% wa

Blastulation, Blastulation  Formation of blastula from morula is called...

Blastulation  Formation of blastula from morula is called as blastulation. During early cleavage the blastomere maintain spherical shape and mulberry like, this stage of emb

Angiosperms, Angiosperms  are the flowering plants. They first appeared at ...

Angiosperms  are the flowering plants. They first appeared at least 110 million years ago from the unknown gymnosperm ancestor, these flowering plants have risen to dominance in th

Describe tr murmur and vsd murmur in details- heart diease, Describe TR Mur...

Describe TR Murmur and VSD murmur in details? TR Murmur :   Characteristic: Holosystolic murmur, loudest at left lower-sternal border and becomes louder with inspiration (Carv

Two gases are likely to be diffusing in and out of the cell, When a cell is...

When a cell is respiring  aerobically, which two gases are likely to be diffusing in and out of the cell, and in which direction will they be diffusing?   When a cell is res

Chromosome jumping, Chromosome jumping is the technique whereby one begins...

Chromosome jumping is the technique whereby one begins with a piece of DNA from one area of a chromosome, and obtains clones from nearby areas without cloning everything in betwee

Atoms, the mass number is used to calculate the number of _________in one a...

the mass number is used to calculate the number of _________in one atom of an elemement. In order to calculate the number of neutrons you must subtract the _______from the ______.

Psychedelic drugs (hallucinogens), PSYCHEDELI C DRUGS (HALLUCINOGENS) - ...

PSYCHEDELI C DRUGS (HALLUCINOGENS) - They act mainly on CNS and greatly alter one's thoughts, feelings and perceptions, called psychedelic drugs. They cause optical or a

Define field test used to assess aerobic capacity, Define Field Test used t...

Define Field Test used to Assess Aerobic Capacity? A field test that has been used extensively in nutrition studies to assess aerobic capacity measures Heart Rate responses to

Uses of microbes in industry-citric acid, Normal 0 false fals...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

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