| A | B |
|---|
| autosome | in humans, the 22 pairs of matching homologous chromosomes; opposite of sex cells |
| carrier | heterozygous individual that appears phenotypically identical as a homozygous dominant individual, but has a recessive allele for an undesirable trait |
| codominant alleles | equal expression of both alleles so both traits of the parents are expressed |
| hybrid | offspring produced when two varieties of organisms are mated |
| inbreeding | mating between closely related individuals |
| incomplete dominance | inheritance pattern in which the phenotype of the offspring is blended; neither allele is completely dominant |
| multiple alleles | presence of more than two alleles for a given genetic trait |
| pedigree | graphic representation showing patterns of inheritance in a family or breeding group |
| polygenic dominance | determination of a given trait produced by the interaction of many genes |
| sex chromosome | in humans, the 23rd pair of chromosomes which controls gender; opposite of autosome |
| sex-linked trait | inherited trait controlled by genes located on the sex chromosomes |
| testcross | breeding technique used to determine if an individual in homozygous dominant or heterozygous for a particular trait |
