| A | B |
| genotype | genetic makeup of an organism |
| phenotype | physical characterisitcs of an organism |
| true breeding | organisms that produce offspring identical to themselves if allowed to self-pollinate |
| heterozygous | an organism that has 2 different alleles for the same trait |
| principle of dominance | some alles are dominant and others are recessive |
| incomplete dominance | 1 allele is not completely dominate over another |
| homologous | chromosomes that have a corresponding chromosome from the opposite-sex parent |
| codominance | both alleles contribute to the phenotype |
| polygenic traits | traits controlled by 2 or more genes |
| independent assortment | genes that segregate independently do not influence each other's inheritance |
| homozygous | an organism that has 2 identical alleles fro a particular trait |