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In pea plants, the allele for tall (T) is dominant over the allele for short (t).A Tt plant is crossed with a Tt plant. What proportion of the offspring will be homozygous dominant?

1/4

In guinea pigs, the allele for black fur (B) is dominant over the allele for white fur (b). What will be the phenotype ratio of the offspring be from a cross between a white guinea pig and a homozygous black guinea pig?

100%

In pea plants, the allele for tall (T) is dominant over the allele for short (t).A Tt plant is crossed with a Tt plant. What percentage of the offspring will be short?

25%

Red-green color blindness is a sex-linked recessive trait on the X chromosome. A woman with normal vision whose father was colorblind marries a man with normal vision. What is the probability that they would have a color-blind child?(N - normal vision, n - color blind)

25%

In snapdragons, the allele for red flower (R) shows incomplete dominance over the allele for white flower (r). If you cross two heterozygous flowers, what are the possible phenotypes of the offspring?

25% red, 50% pink, 25% white

In pea plants, the allele for purple flowers (P) is dominant over the allele for white flowers (p).A white-flowered plant is crossed with a plant that is heterozygous for the trait. What percentage of the offspring will have purple flowers?

50%

Red-green color blindness is a sex-linked recessive trait on the X chromosome. A woman who is colorblind marries a man with normal vision. What is the probability that they would have a child with normal vision?(N - normal vision, n - color blind)

50%

In guinea pigs, the allele for black fur (B) is dominant over the allele for white fur (b). What will be the genotype ratio of the offspring be from a cross between a white guinea pig and a heterozygous guinea pig?

50%Bb 50% bb

A child has blood type A and the mother has type O. What are the possible genotypes of the father? Choose all that apply.

AO AA AB

One parent has blood type A and the other parent has blood type B. Their baby has blood type O. How is this possible?

The parents' genotypes must be AO and BO.