All terms in this list:

sexual reproduction: A type of reproduction in which male and and female reproductive cells combine to form offspring with the same genetic material.

gene: The basic unit of heredity that consists of a segment of DNA on a chromosome

heredity: The passing of genes form parents to offspring; the genes are expressed in the traits of the offspring

Allele: An alternative form of gene for a specific trait or gene product

Phenotype: The observable characteristics or traits of an organism

genotype: The genetic makeup of an organism; all the genes an organism has.

Dominant: a term used to describe an allele that determines the phenotype of an organism when two different copies are present in the genotype

Recessive: a term used to describe an allele that is not expressed when combined with a dominant form of a gene

Homozygous: having 2 like genes for a hereditary trait such as tallness at corresponding positions on the chromosomes

Heterozygous: having different pairs of genes, as for tallness and shortness, at corresponding positions on the chromosomes of an organism.

Punnett square: A chart used to show all the ways genes from 2 parents cam combine and be passe to offspring' used to predict all genotypes that are possible.

pedigree: a record of on's family members that shows the presence of a specific genetic condition.

Mutation: Sudden change in genetic material.