| A | B |
|---|
| allele | the different forms of a gene |
| gene | a segment of DNA on a chromosome that codes for a specific trait |
| dominant | describes an allele whose trait always shows up in the organism when the allele is present |
| genetics | the scientific study of heredity |
| heredity | having two different alleles for a trait |
| homozygous | having two identical alleles for a trait |
| meiosis | stage of cell cycle when the cell's nucleus divides into two new nuclei and one copy of the DNA is distributed into each "daughter" cell |
| recessive | describes an allele that is masked when a dominant allele is present. |
| trait | a characteristic that an organism can pass in to its offspring through its genes |
| heterozygous | having two different alleles for a trait |
