How might genotype frequencies of alleles for body size change under directional selection? see section 23.3 ( page 463) ?

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26-08-2018
Biology

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How might genotype frequencies of alleles for body size change under directional selection? see section 23.3 ( page 463) ?

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vilnius vilnius · Answer 1 · 2018-09-04T19:05:09+02:00

The directional selection is the type of natural selection, in which an extreme phenotype is promoted due to the changes in the environment. This causes the changes in the allele frequency and the shifting of the phenotype in a particular direction. In this condition, one of the extreme phenotypes are promoted, which result in the shifting of genotypic frequency either of the homozygous characteristics.