what is genetic variation ? is it similar to genetic drift

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Variation- The change in characteristics of individuals is called genetic variation. example- free and attached earlobes.

genetic drift-  random change in gene frequency due to chance events. in simple language , the population of a species type pf species keeps on changing due to natural calamities. for xample if there are red beetles and blue beetles, they oth will be equally eaten by a crow but if unfortunately an elephant steps over red beetles, then they will die n only blue beetles will survive.

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* Of * Both

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 it means a variety of genes- For example Sexual reproduction provides genetic variation because the offspring will have some genes from their mom and some from dad. 
Genetic Variation is good because for animals it means they'll adapt easier and be stronger, be able to take on infections, etc. 


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 A measure of the genetic differences there are within populations or species. For example, a population with many different alleles at a locus may be said to have a lot of genetic variation at that locus. Genetic variation is essential for natural selection to operate since natural selection can only increase or decrease frequency of alleles already in the population

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 Random fluctuations in the frequency of the appearance of a gene in a small isolated population, presumably owing to chance rather than natural selection.

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