Theory of embryology - gradient theory, Biology

GRADIENT THEORY -

It was given by T. Boveri & was supported by M.C. Child.

Child called it as metabolic axial gradient theory.

According to it, the egg has distinct animal & vegital poles.

The cytoplasm of the animal pole divides repidly but the rate of cleavage in the vegital pole is slow. It indicates that the rate of metabolism is more in the animal pole than the vegital pole which is called as metabolic axial gradient.

Horstadius & Runnstrom called it as double gradient thoery. They explain egg development on the basis of animal pole gradient & vegital pole gradient.

Posted Date: 10/3/2012 7:01:15 AM | Location : United States







Related Discussions:- Theory of embryology - gradient theory, Assignment Help, Ask Question on Theory of embryology - gradient theory, Get Answer, Expert's Help, Theory of embryology - gradient theory Discussions

Write discussion on Theory of embryology - gradient theory
Your posts are moderated
Related Questions
A genetic trait which is considered to be harmful in the present day might prove to be beneficial in future. For example by removing the trait for sickle cell we may increase the s

Do algae reproduce sexually or asexually? There are algae that replicate sexually and there are algae that replicate asexually. In unicellular algae reproduction is usually

Q. What is the use of Adrenergic Receptor? Adrenergic Receptors are also subdivided into 2 major categories: ALPHA α - or- BETA β In general, when NE (E) binds to alpha r

Whey Protein Concentrates You already know that whey is the residual liquid substance that is obtained by separating the coagulum from milk during cheese making. There are imp

Define Renal Function & cardiovascular - change related with ageing? Changes associated with the cardiovascular and renal function: The progressive accumulation of athermanous

Neonatal  hypoglycaemia Hypoglycaemia is a metabolic condition of newborn piglets that develops in first few days of life due to decreased caloric intake and increased cataboli

Explain the diagnostic set-up surgical stent The patient should understand the procedure and be warned of any complications. They should have agreed with the treatment plan, t

SCIENTIFI C METHOD - The scientific approach to explain a particular phenomenon require a series of organized steps based on common sense. It is called scientific method. A

Morphogenesis and Totipotency A chlamydomonas mother cell gives rise to two daughter cells by a simple division. But a leaf cell cannot give rise to a new plant except in cas

I WANT JOB FOR TEACHING SCINCE SUBJECT FOR ONLINE