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An organism has the genotype AaBb. This organism produces gametes with how many possible combinations of alleles?

• 1

• 2

• 3

• 4

An organism of genotype AaBb can make gametes of all the following kinds except:

• AB

• Bb

• Ab

• aB

If AaBb is crossed with AaBb, what proportion of the offspring would be expected to be aabb?

• 9/16

• 1/8

• 1/4

• 1/16

If  P = purple flower and p = white, and

 T = tall plants and t = short plants, a Pptt plant would be:

• Purple, Tall

• Purple, Short

• White, Tall

• White, Short

What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?

• rY

• RrYy

• RRYy

• Rryy