| A | B |
| allele | an alternate form that a gene may have for a single trait |
| dominant | describes a trait that covers over, or dominates, another form of that trait |
| genetic engineering | biological and chemical methods to change the arrangement of a gene's DNA to improve crop production |
| genetics | the study of how traits are inherited through the actions of alleles |
| genotype | an organism's genetic makeup |
| heredity | the passing of traits from parent to offspring |
| heterozygous | describes an organism with two different alleles for a trait |
| hybrid | an offspring that was given different genetic information for a trait from each parent |
| incomplete dominance | production of a phenotype that is intermediate between the two homozgou parents |
| phenotype | outward physical appearance and behavior of an organism |
| polygenic inheritance | occurs when a group of gene pairs acts together and produces a specific trait |
| punnett square | a tool to predict the probability of certain traits in offspring that shows the different ways alleles can combine |
| recessive | describe a trait that is covered over, or dominated, by another form of that trait and seems to desappear |
| sex-linked gene | an allele inherited on a sex chromosome |