How do mutations lead to genetic variation?

by producing random changes in an organism's genetic code

by changing the organism's appearance

by changing the way that the organism reproduces

by changing the organism's behavior

Question

How do mutations lead to genetic variation?

by producing random changes in an organism's genetic code

by changing the organism's appearance

by changing the way that the organism reproduces

by changing the organism's behavior

anonymous · Answer

A

anonymous · Answer

Mutations are changes in the DNA sequence of the genetic code of an organism. When there is a change in the genetic code, this change is passed down to the next generation, producing an effective change in the population and hence, genetic variation. 
So the answer is A.
The other options might occur DUE to mutations but they are only effects of the mutation, and they do not account for genetic variation. KEYWORD: genetic - having to do with genes... so changing the "genetic" code results in changed "genetic" variation.