Biology (A)

Vocabulary

allele

An alternative form of a gene.

co-dominance

A pattern of inheritance where both alleles are equally expressed.

genotype

The genetic makeup of a cell or organism, defined by certain alleles for a particular trait.

homozygous

Having identical alleles for a particular trait.

heterozygous

Having two different alleles for a particular trait.

incomplete dominance

A pattern of inheritance where the offspring has a phenotype that is halfway between the two parents’ phenotypes.

phenotype

The physical appearance that is a result of the genotype.

polygenic inheritance

A pattern of inheritance where the trait is controlled by many genes and each dominant allele has an additive effect.