Which alleles indicate an organism that is hybrid for a trait?

The passing of traits from one generation to the next is ____.

How many pairs of chromosomes do humans have?

If a human is a girl, her sex chromosomes are:

A _______________ is a chart or family tree that tracks which members of a family have a particular trait.

The scientific study of heredity is called

The trait that is hidden by the presence of an overpowering trait is:

You and your colleagues are constructing a pedigree for a patient with cystic fibrosis. The individual's brother has also been diagnosed with cystic fibrosis. How would this brother be represented in the pedigree?

A man carrying the allele for Huntington's disease marries a woman who is homozygous recessive for the allele. What is the probability that their offspring will develop Huntington's disease?

An individual has type AB blood. His father has type A blood and his mother has type B blood. The individual's phenotype is an example of ____.

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