Question

what is the importance of variation?

Answer 1

when the selection was detected primarily for body size it favoured large individual such inconsistency in strength and the shape of selection over time likely maintain important variation with in the population overall and suggest that there is no clear best—adapted morphology is a dinamic habit

Answer 2

HEY MATE HERE IS YOUR ANSWER:-

IMPORTANCE:-
They make an organism better fitted to struggle for existence in a particular environment. They also enable human beings to improve the races of important plants and animals. However, they are unable to form a new species though Darwin (1859) based hisevolution theory of natural selection on continuous variations. Genetic variation is an important force in evolution as it allows natural selection to increase or decrease frequency of alleles already in the population. ... Genetic variationis advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population.
Genetic variation creates a larger pool of traits in a species so that given a novel environment, at least someone would have the trait needed to survive.

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