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

Natality - population parameters and regulation, Natality - Population Para...

Natality - Population Parameters and Regulation Natality is the ability of a population to increase. Natality rate is equivalent to birth rate which means the production of ne

What do protozoans eat, Q What do protozoans "eat"? Do they move in search ...

Q What do protozoans "eat"? Do they move in search for food? Protozoans are heterotroph beings that are they do not make their own food and thus they need to search for it in t

What is osseointegration, What is Osseointegration Osseointegration was...

What is Osseointegration Osseointegration was the hallmark of success in implant dentistry in the 1980s. It was believed that an implant was successfully integrated when there

Skeletal tissues - cartilage, SKELETA L TISSUES - These connective ...

SKELETA L TISSUES - These connective tissues form the endoskeleton of the vertebrates. These support the body, protect the various organs and help in locomotion. Skel

Can you explain ventricular septal defect, Q. Can you explain Ventricular S...

Q. Can you explain Ventricular Septal Defect? VSD can be found in various part of ventricular septum hence all possible views except suprasternal views are used to detect an

Explain about balanus, Explain Balanus The realised niche of Balanus ...

Explain Balanus The realised niche of Balanus is the same as its fundamental niche  Lower limits:   as for fundamental niche. Upper  limits: as for fundamental niche

What are bleeding disorders, Question 1 How would you perform prothrombin ...

Question 1 How would you perform prothrombin time (PT) test? What are the precautions to be taken while performing the test to avoid errors? List various factors that affect the a

Why ascending method of paper chromatography is preferred, Why Ascending Me...

Why Ascending Method of Paper Chromatography is Preferred? The ascending method is preferred because of the simplicity of the set up. In actual method the substance to be separ

Effects on aquatic organisms - water pollution, Effects on Aquatic Organism...

Effects on Aquatic Organisms - Water Pollution Toxic water pollutants such as metals, pesticides, insecticides and chemicals affect aquatic species directly whereas the non-t

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