12.2 Vocab

The passing off of physical characteristics, or traits, from parents to offspring.

The scientific study of heredity.

The process in sexual reproduction in which an egg cell and a sperm cell join to form a new cell.

An offspring of many generations that have the same form of a trait.

The different forms of a gene.

• An allele whose trait always shows up in the organism when the allele is present.

An allele that is hidden whenever the dominant allele is present.

An offspring of crosses that has two different alleles for a trait