Answers

2015-10-31T15:58:45+05:30
VARIATION :- A change or slight difference in condition, amount, or level, typically within certain limits.

- A further source of variation 
is migration into a population from other populations with different gene frequencies.

- The resulting mixed population will have an a
llele frequency that is somewhere intermediate between its original value and the frequency in the donor population.

SOURCE OF ORIGIN :-

1) MUTATION. 

2) GENE FLOW.

3) SEXUAL REPRODUCTION.


1 5 1