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

Define nutrition and sports - physical fitness of an athlete, Define Nutrit...

Define Nutrition and Sports - Physical Fitness of an athlete? The physical fitness and performance of an athlete is affected by both current and previous nutritional status. T

In hormonal terms why does menses occur, Q. In hormonal terms why does mens...

Q. In hormonal terms why does menses occur? Menses is the endometrial monthly desquamation that occurs as the progesterone and estrogen levels fall after the regression of the

Define nutrition support in postoperative nutritional care, Define Nutritio...

Define Nutrition Support in Postoperative Nutritional Care? Aggressive nutritional support is important to avoid postoperative complications and mortality. Routine postoperativ

Define prevalence of weight management, Define Prevalence of Weight Managem...

Define Prevalence of Weight Management? WHO (1998) estimates that in developing countries about 245 million adults are moderately underweight and 93 million severely underweigh

Vitamin d, defitionce of vitamin d

defitionce of vitamin d

Why plant nutrients is said to be essential, Why plant nutrients said to be...

Why plant nutrients said to be essential An element is said to be essential if,   (i)   The deficiency of an element in plant, makes it impossible to complete the vegetative

Define food sources of calcium, Define Food Sources of Calcium? Dairy p...

Define Food Sources of Calcium? Dairy products are of course the primary source of calcium followed by grains and pulses. Among the millets, ragi contains substantial amount of

Pain - criteria for endosteal implants, Q. Pain - criteria for endosteal im...

Q. Pain - criteria for endosteal implants? Pain and tenderness are subjective criteria and depend on patient's  interpretation of the degree of discomfort. Pain is defined as u

Byproducts of high energy value but low in nitrogen, Byproducts of high ene...

Byproducts of high energy value but low in nitrogen The byproducts of the sugar industry (molasses, sugar beet pulp), the horticultural industry and products such as stock fee

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