Laws of cleavage, Biology

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.

Posted Date: 10/3/2012 8:53:00 AM | Location : United States







Related Discussions:- Laws of cleavage, Assignment Help, Ask Question on Laws of cleavage, Get Answer, Expert's Help, Laws of cleavage Discussions

Write discussion on Laws of cleavage
Your posts are moderated
Related Questions
Different areas of brain - HUMA N BRAIN DIFFEREN T AREAS OF BRAIN Note : - In brain glutemic acid metabolins is common In latemaria brain's size

Define Types of Root Canal Perforations According to size According to size: Small perforation: ( smaller than #20 endodontic instrument ) mechanical damage to tissue is

Determine Energy demand for Vigorous or vigorously active lifestyles? These people engage regularly in strenuous work or in strenuous leisure activities for several hours. Exam

Explain about the Alzheimer's Disease? Named after the German neurologist who first described it, Alzheimer's disease is the most common cause of progressive dementia, due to t

What are fossils? The Fossils are petrified vestiges of beings that lived in the past conserved by chemical and geological processes and found within rocks and sedimentary stra

Explain what is Mustard Operation ? The difference in Mustard operation is that either pericardium or polyester patch is used for making the inter atrial baffle. The baffle com

Q. Which are the major positive ions found in living beings? The major cations found in living beings are the calcium cation (Ca++), the potassium cation (K+), the sodium catio

At the starting of the first round of elongation, the initiation codon (AUG) is positioned in the P site with fMet-tRNAfMet bound to it by codon-anticodon base pairing.  In The nex

The best way to maintain quality of air and pollutant's emissions is by using less polluting fuels and processes. Following can be taken to control air pollution. Source correc

Explain about the Family and Social History - Assessment  Recent studies suggest that genetic variation plays an important role in etiology of learning problems. Hence, the col