Genetic traits are determined by one or more

A version or variation of a gene

Long strands of DNA are wrapped into

Humans have _______ pairs of chromosomes, for a total of _______ chromosomes.

These types of alleles are only expressed if the organism has two copies

This type of allele is expressed whether there are one or two copies present.

In pea plants, purple flowers (P) are dominant to white flowers (p). The characteristic of a PP plant would be

In pea plants, purple flowers (P) are dominant to white flowers (p). The characteristic of a pp plant would be

In pea plants, purple flowers (P) are dominant to white flowers (p). The characteristic of a Pp plant would be

In mice, black fur (B) is dominant to brown fur (b). A Bb mouse would have the characteristic of

In mice, black fur (B) is dominant to brown fur (b). A bb mouse would have the characteristic of