7. Finches on the Galapagos Islands express a variety of traits. Variability in the offspring of these finches is a result
of

Meiosis and mutation

Explanation:

Meiosis because that is the result of how you get genes.

Mutation because that is acctually how you would get that specific gene or variability in the offspring.

i'm gonna put a couple so you can chose from

explanation:

if you know the fur color of the offspring mice, you can use the ratios to identify the genotypes of the parents.

if either parent mouse passes a dominant allele, the offspring will have black fur.

if the parental mice has two different fur color (i.e white and black) , the color of the offspring's fur would be either black, white, or the combination of both (grey)

hope this : )