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

Conditions necessary for outbreak of staphylococcal food, Q. Conditions Nec...

Q. Conditions Necessary for Outbreak of staphylococcal food? The following conditions are necessary for an outbreak of staphylococcal food poisoning: 1. The food must conta

Nursing care - megaloblastic anaemia, Planning the Nursing Care   The g...

Planning the Nursing Care   The goals of nursing care are:    Identify the causative factor of megaloblastic anaemia.    Administer appropriate vitamins depending  on

Define biodiversity and ecosystem stability, Define Biodiversity and ecosys...

Define Biodiversity and ecosystem stability? Human's have transformed ecosystems all through the world, frequently replacing diverse natural ecosystems with ecosystems which ar

How do the repairing enzymes of the genetic system act, How do the repairin...

How do the repairing enzymes of the genetic system act? There are enzymes within the cells that detect errors or alterations in DNA molecules and start a repair of those errors

Define autoclave - food microbiology, Define Autoclave - Food Microbiology?...

Define Autoclave - Food Microbiology? For sterilization, steam under pressure is generally employed using an instrument called autoclave. Figure illustrates the autoclave. Auto

How are inhalation and expiration carried out, Q. How are inhalation and ex...

Q. How are inhalation and expiration carried out? The diaphragm exclusive of mammals and the intercostals muscles can contract or relax varying the volume of the thorax the com

Glands and its types, Glands A cell, tissue or organ which secretes ...

Glands A cell, tissue or organ which secretes specific chemical secretion is known as a gland. The glands develop from the epithelium tissues. The glands are classifi

What are the factors affecting osseointegration, Factors Affecting Osseoint...

Factors Affecting Osseointegration a) Biocompatibility of the material b) Surgical technique- c) Bone density - d) Occlusal load e) Infection f) Implant surface

Show characteristics of food products, Q. Show characteristics of food prod...

Q. Show characteristics of food products? These sensory characteristics of food products. Food quality, as such, can be divided into three main categories i.e. i. Appeara

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