Question

what are the 3 variations in a population?
explain each point briefly

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Answer 1

a single mutation can have a large effect, but in many cases, evolutionary change is besad on the accumulation of many mutations. gene flows in any movement of genes from one population to another and is an important source of genetic variation. sex can introduce new gene combinations into a population.

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Answer 2

birthrate is the number of live birth per 1,000 person in a year

death rate is the number of death per 1,000 person in a year

migration is the movement of people from one place to another for better job facility, living condition etc.