Question

how do mutations lead to variation?
a. by producing changes in the genetic code
b. by giving organisms new features for survival
c. by providing a source of energy for cells
d. by signaling proteins to be synthesized
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Explanation:

Mutations are changes in the DNA sequence. DNA contains the genetic code. When there is a mutation, it alters this genetic code. Variation in a population is due to differences in the genetic code among individuals. So, mutations lead to variation by changing the genetic code.

Answer:

A. by producing changes in the genetic code