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

What do you mean by linnaeus binomial system, Q. What do you mean by Linnae...

Q. What do you mean by Linnaeus binomial system? Almost a century after Bauhin the great Swiss naturalist Carolus Linnaeus (1707-1778) published the two monumental works the "S

What are complementary genes, What are complementary genes? Does this inher...

What are complementary genes? Does this inheritance pattern obey Mendel's second law? Complementary genes are the different genes that act together to determine a given phenoty

What is the significance of pharyngeal gill slit, What is the significance ...

What is the significance of Pharyngeal gill slit ? Lateral opening in the wall of the pharynx which allows water to enter into the mouth and exit through the pharynx. This is on

Digestion of proteins, Digestion  of proteins Digestion  of proteins  ...

Digestion  of proteins Digestion  of proteins  is  initiated  in  the  stomach by pepsin.  Pepsin  acts upon food proteins  and  converts them  to proteoses  and  peptones whic

What is protein synthesis, What is Protein Synthesis? Protein Synthesi...

What is Protein Synthesis? Protein Synthesis :  Protein synthesis begins in the nucleus, with the formation of mRNA from a DNA template through transcription. The function of

Estuaries - aquatic ecosystems, Estuaries - Aquatic Ecosystems All the...

Estuaries - Aquatic Ecosystems All the rivers and lakes ultimately drain into the sea. However, many rivers develop a highly specialised zone before joining the proper sea. Th

Show species with exoskeleton, Q. Which other phylum of the animal kingdom ...

Q. Which other phylum of the animal kingdom present species with exoskeleton? Arthropods present exoskeleton made of chitin. Echinoderms do not have exoskeleton but they presen

When should eat a salad with lettuce, When you eat a salad with lettuce, cr...

When you eat a salad with lettuce, croutons, hard-boiled egg, bacon bits, and salad dressing, which one of those ingredients will be broken down the least by your digestive system?

Drawbacks of fats and sweets in diabetics, Drawbacks of Fats and Sweets in ...

Drawbacks of Fats and Sweets in diabetics Diabetics should eat less fats and sweets. Fats found in burger, cheese and butter etc. should especially be avoided. Even when  a pat

#amphibia, amphibia class characteristics

amphibia class characteristics

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