How do genetic mutations influence biological diversity, Biology

Assignment Help:

How do genetic mutations influence biological diversity?

Too frequent or too extensive genetic mutations usually are deleterious for individuals and species. These mutations frequently cause important phenotypical changes or defects incompatible with the survival of the body and the continuity of the species

Though small genetic mutations that do not cause the appearing of lethal changes are continuously accumulated in the genetic patrimony of the species. These mutations slowly add to each other giving birth to small phenotypical changes in individuals and these small changes are exposed to the selective criticism of the environment (natural selection) and the more favorable for survival and reproduction are preserved (the remaider are eliminated as their carriers have difficulty in surviving and reproducing). In this manner a combined processes of accumulation of small mutations and of natural selection incorporate new features in the species and they may even lead to speciation (formation of new species) and promotion of biological diversity (Obviously only genetic mutations transmitted by cells that originate new individuals, in sexual or asexual reproduction, have evolutionary effect.)

 


Related Discussions:- How do genetic mutations influence biological diversity

Determine the use of opg, Determine the use of  OPG An OPG is used to...

Determine the use of  OPG An OPG is used to see the possibility for an anterior loop which is found to extend about 1-3 mm anterior to the mental foramen in about 12 per cent

The mirrows reach or grayling zone, The mirrows reach or grayling zone ...

The mirrows reach or grayling zone This zone has a less steep gradient, than the trout beck. The river here still flows swiftly, though the current is not fast and conditions

Zoology, why phylum protozoa is called protozoa?

why phylum protozoa is called protozoa?

Limiting factors of green plants, What are likely to be the limiting factor...

What are likely to be the limiting factors in a population of (a) green plants, (b) birds?  (a) In green plants the limiting factors are likely to be light, water, minerals, te

Is the esophagus a muscular organ, Q. Is the esophagus a muscular organ? Wh...

Q. Is the esophagus a muscular organ? Why even in a patient lying totally flat on a hospital bed can the swallowed food reach the stomach? The esophagus is a predominantly musc

Dna replication in eukaryotes, DNA replication in eukaryotes is much more c...

DNA replication in eukaryotes is much more complex than in prokaryotes while there are various same aspects. The Eukaryotic cells can only initiate DNA replication at a particular

Intravenous route, Intravenous Route This route of administering drug...

Intravenous Route This route of administering drugs is becoming more popular in the paediatric practice. Purpose of this Route When rapid action is required.

Steps for elongation , a) The elongation level of translation in eukaryo...

a) The elongation level of translation in eukaryotes requires three elongation factors, eEF-IB, eEF-1A and eEF-2, that have similar functions to their prokaryotic counterparts EF-G

Origin and delivery - transport in phloem, Origin and Delivery - Transport ...

Origin and Delivery - Transport in Phloem We have stated above that transport of photosynthates starts from leaves and ends up in one or the other sink tissue. Though this is

Explain haccp, HACCP Normal 0 false false false ...

HACCP Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

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