The process that occurs in the formation of sex cells (sperm and egg) by which the number of chromosomes is reduced by half

A sequence of DNA that determines a trait and is passed from parent to offspring

The scientific study of heredity

The inheritance of traits that are controlled by two or more genes, such as height in humans

The passing if traits from parents to offspring.

Three or more possible alleles of a gene that determines a trait

Having two identical alleles for a particular gene

A number that describes how likely it is that a particular event will occur

A situation in which one allele is not completely dominant over another allele

An organism’s genetic makeup, or allele combinations

A situation in which both alleles for a gene are expressed equally

A chart that shows all the possible combinations that can result from a genetic cross

An allele that is hidden whenever the dominant allele is present

The different forms of a gene

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

Having two different alleles for a particular gene

A specific characteristic that an organism can pass to its offspring through its genes.

An offspring of crosses that has the same form of traits

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