Genetic recombination, Biology

Assignment Help:

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.


Related Discussions:- Genetic recombination

How to investigate aortic stenosis by roentgenogram, Q. How to investigate ...

Q. How to investigate aortic stenosis by Roentgenogram? Cardiac enlargement does not occur in pure compensated aortic stenosis. Post stenotic dilatation of aorta may be seen. F

Plants of estuary, Plants of Estuary The plants of the estuary are of ...

Plants of Estuary The plants of the estuary are of four basic types: Phytoplankton, Marginal marsh vegetation, Mud-flat algae and Epiphytic plants

Agro industrial-phenolic compounds, Phenolic compounds Gossypol: Gos...

Phenolic compounds Gossypol: Gossypol is a toxic compound found in the cotton plant. It is concentrated in the cottonseed but can also be found in other parts of the cotton

What is consciousness, The importance of the brain in our everyday lives ca...

The importance of the brain in our everyday lives can never be underestimated. The brain has physical properties that are in a constant state of flux. The brain never rests totally

Explain phylum tracheophyta, Phylum Tracheophyta Tracheophytes mean vas...

Phylum Tracheophyta Tracheophytes mean vascular plants. Tracheophyta includes ferns, the gymnosperms and the flowering plants. They have appeared some 400 million years ago, an

Human respiratory system - nasal chamber, NASA L CHAMBER - External...

NASA L CHAMBER - External nares are 2 in number, i.e., dirhynous. Situated at lower side of nose. Open into nasal chamber. Nasal chamber opens into pharynx by internal n

Show the major human diseases caused by fungi, Q. What are the major human ...

Q. What are the major human diseases caused by fungi? The main human diseases caused by fungi are paracoccidioidomycosis, histoplasmosis, blastomycosis, coccidioidomycosis, or

What is atrial fibrillation, Q. What is Atrial Fibrillation ? As the le...

Q. What is Atrial Fibrillation ? As the left atrial size increase and atrial wall gets fibrosed, depolarization wave fronts get fragmented and atrial fibrillation sets in. Atri

Mechanical isolation, In certain instances differences in the morphology of...

In certain instances differences in the morphology of genitalia between species make it impossible for normal mating to occur, and sympatric species tend to remain isolated. When t

What is the formula of the dpd for withered plant, Q. What is the formula o...

Q. What is the formula of the DPD for withered (shrunken) plant cells and how is that situation possible? Withered plant cells are those that have shrunk due to loss of water b

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