Phenylketonuria (also called PKU) is a condition in which your body can't break down an amino acid called phenylalanine. One of the parents of a child has PKU, which is caused by recessive alleles. The other parent does not have the PKU alleles. What is the chance that the couple will have a child with PKU?

The diagram shows a pedigree for a recessive genetic disorder.

What is the genotype of individual 6?

The table lists the trials for fruit color where allele R exhibits incomplete dominance over allele R'. _

Heterozygous fruit have orange phenotypes. What percent of offspring are expected to have an orange phenotype if the parent plants are orange parent is crossed with a yellow parent?

Hitchhiker's thumb (H) is dominant to no hitchhiker's thumb (h). A woman who does not have hitchhiker's thumb marries a man who is heterozygous for hitchhiker's thumb. What is the probable genotypic ratio of their children?

Sickle Cell Anemia in humans is an example of codominance. If a parent with normal blood cells is mated with a parent that is a carrier of sickle cell, what are the chances of having a child that is also a carrier of sickle cell?

Colorblindness is a recessive, sex-linked trait located on the X chromosome. Gaspar is a colorblind man, and his wife Stephanie is a carrier for colorblindness.

If they have a male child, what is the probability that their son will be colorblind?

Sickle cell and straight hair line are recessive traits. Only individuals with two copies of the allele end up with recessive trait. A father who is homozygous recessive for sickle cell disease and heterozygous for the widows peak hairline. The mother is heterozygous and does not have sickle cell disease but is homozygous recessive for hairline. These parents then have an offspring who has sickle cell and a straight hairline. Which of the following statements gives the best explanation for why the offspring has inherited the sickle cell trait and the straight hair line trait?

Using the pedigree and her parents, which Punnett square shows the probability of offspring Z's genotype for hair color?

An offspring will receive _______ allele(s) from each parent to determine a specific trait and this is an example of the law of ____________?

When a trait, such as height in humans or varied feather color, is continuously variable over a wide phenotypic range, it is reasonable to suspect that it is exhibiting:

If a father is has homozygous A blood and a mother has AB blood, what is the probability for a child with AB blood?

If your genotype is Bb, then there is an equal chance you can either pass a B or b to your child but you can't pass both.