Selective pressure decreases the genetic variations among the population. This is because this particular type of pressure is applied to relative fit and best-adapted individuals to pass their genetic information to the next generation.
What is Genetic variation?
Genetic variation may be defined as the existence of differences in the sequences of genes between individual organisms of a species significantly.
Selective pressure is sometimes applied by nature and hence known as natural selection, while it may sometimes be applied by mates to perform reproduction, it is known as mating selection.
Both types of selective pressure are applied on relative fit and best-adapted organisms with unique skills. Both types of selective pressure decrease the genetic variations among the population.
Therefore, it is well described above.
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