In humans, brown eyes are dominant to blue. If a blue-eyed woman had children with a purebred brown-eyed man, what is the chance of any of their children having blue eyes.

If a blue-eyed woman had children with a heterozygous brown-eyed man, what is the chance of any of their children having blue eyes.

If 2 heterozygous brown-eyed parents had children, what is the chance of any of their children having blue eyes. Show the Punnett Square.

The father of a child has type AB blood. The mother is heterozygous for A. Which blood types can their children NOT have?

Color-blindness is a recessive disorder controlled by a gene on the X chromosome. If a normal vision man and a carrier woman have children what is the likelihood of having sons with color-blindness?

Color-blindness is a recessive disorder controlled by a gene on the X chromosome. If a colorblind man and a normal vision woman have children what is the probability of having daughters who are carriers?

A woman who is heterozygous for A blood and a man who is homozygous for type B blood could potentially have offspring with what blood types? Choose all the possibilities.

In radishes, the gene that controls color exhibits INCOMPLETE dominance. Pure-breeding red radishes crossed with pure-breeding white radishes make purple radishes. What are the phenotypic ratios when you cross a purple radish with a white radish?

In purple people-eaters, one-horn is dominant and no horns is recessive. Cross two purple people-eaters that are heterozygous for horns. What are the genotypic & phenotypic ratios?

Crosses between a yellow rat and a yellow rat ALWAYS produce yellow rats. Crosses between a white rat and a white rat ALWAYS produce white rats. But crosses of a white with a yellow produce a cream rat. What type of inheritance patter is this?

Crosses between a yellow rat and a yellow rat ALWAYS produce yellow rats. Crosses between a white rat and a white rat ALWAYS produce white rats. But crosses of a white with a yellow produce a cream rat. What are the genotype and phenotype ratios if you cross two cream rats?

The mother has type A blood. Her husband has type B blood. Their child has type O blood. The father claims the child can’t be his. Is he right?

Sickle cell anemia is a recessive disease of the blood. Since it's recessive, you need two copies of the sickle cell gene to show the disease. If instead you are a heterozygote you are a carrier (don't have the disease but can pass it onto your children). Let’s consider a situation where two carriers marry and have children. What is the possibility of having a child with sickle cell anemia?

In humans, the allele for albinism (lack of pigment) is recessive to the allele for normal skin pigmentation. If two hybrid parents have children what is the chance that a child will be albino?

In the P generation, a purebred yellow pea plant (dominant) is crossed with a purebred green pea plant (recessive). The F₁ generation is allowed to self-pollinate. What is the probability of having yellow pea plants in the F₂ generation?

In cows, red fur (C^R) is codominant with white fur (C^W). Show a cross between a red cow and a roan cow (C^RC^W). What would the phenotypic ratio be?

The genes for hemophilia are located on the X chromosome. It is a recessive disorder. What is the probability of having sons with hemophilia from a man normal for blood clotting and a woman who is a carrier? (HINT: You have to keep track of what sex the children are!)

In pea plants, round peas are dominant over wrinkled peas. Use a Punnett square to predict the genotypic ratio of a cross between a heterozygous pea plant and a wrinkled pea plant.

In pea plants, yellow peas are dominant over green peas. Use a Punnett square to predict the genotypic ratio of a cross between two plants that are heterozygous/hybrid for yellow peas (Yy).