the origin of sex

Essay specific features

 

Issue:

Science

 

Written by:

Kathleen R

 

Date added:

March 25, 2015

 

Level:

University

 

Grade:

A

 

No of pages / words:

3 / 808

 

Was viewed:

5842 times

 

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Essay content:

Although this process is common for plants and some reptiles and insects, it has not been observed in mammals. Reproduction without sex is not possible. Sex is advantageous to populations . Selective advantages can occur at three levels. Firstly, entire populations can benefit at the expense of others...
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Secondly, individuals might be advantageous in survival over others, some genotypes having a better chance of success in a particular environment. Individual selection is effective in short term. Lastly, within an individual, sex may favour some genes over others. Selection is advantageous to sexual populations because they can evolve at a rapid rate and asexual populations accumulate deleterious mutations...
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