Genetic recombination, Biology

Mutations are the only kind of variability generating mechanism in prokaryotes and asexually reproducing organisms. But in eukaryotes where sexual recombination occurs, even in one generation there is a marked reshuffling of genes in the chromosomes which amplifies the genetic variability in a population. The kind of variability generated by recombination is tested by natural selection in as many genetic backgrounds as possible and in as short time as possible (say in one generation). Thus one of the greatest and fundamental advantages of sexual reproduction is the generation of variability. Provided the populations are large, even if mutations do not exist, the mechanism of sexual recombination alone would be generating new genotypes for very long time.

Posted Date: 4/6/2013 1:17:00 AM | Location : United States







Related Discussions:- Genetic recombination, Assignment Help, Ask Question on Genetic recombination, Get Answer, Expert's Help, Genetic recombination Discussions

Write discussion on Genetic recombination
Your posts are moderated
Related Questions
Computed Tomograpy Scan Developments in cross-sectional imaging techniques such as spiral tomography and reformatted computerized tomograms have become increasingly popular in

Determine the Factors that Affecting Food Choice? As a dietician, it is necessary to understand how our food choices are affected. Every day we make food choices which influenc

Q. Is herbivorism a form of predatism? The Herbivorism is a form of predatism in which first order consumers feed from producers (plants or algae). For instance, fruits and bir

What is the Still Retorts? Still Retorts are used in canning plants for heating foods in glass containers or different sizes of cans. These retorts are usually cylindrical in s

Carbon dioxide needed for photosynthesis enters the leaf via the stomata but water is also lost when these pores are open. Water is often limiting and to limit water loss through s

Since Some animals, particularly ruminants and termites, can digest cellulose with the help ofsymbiotic micro-organisms that live in their guts. Humans can digest cellulose to some

The substance that is worked on by an enzyme is called: a. product b. coenzyme c. substrate d. inhibitor

Q. What is the valve that separates the aorta from the heart? What is the importance of that valve? The valve between the aorta and the left ventricle is the aortic valve. The

Gastrointestinal Tract - Changes Associated with ageing? Many path physiological factors limit the adequacy of the dietary intake of elderly. Loss of natural dentition may occu

Features of Plant and Animal Cell However plant and animal cells also differ. One of the most prominent features of the plant cell is its huge vacuoles filled with cell sap.