| A | B |
| purebred plant | always produces offspring the same as parent |
| genes | factors that control traits |
| alleles | different forms of a gene |
| hybrids | heterozygous for a particular trait |
| probability | liklihood that a particular event will occur |
| punnett square | shows all possible outcomes of a genetic cross |
| phenotype | physical appearance or visible traits |
| genotype | genetic makeup or allele combinations |
| homozygous | two identical alleles for a trait |
| heterozygous | two different alleles for a trait |
| codominance | alleles are neither dominant or recessive |
| meiosis | process by which number of chromosomes is reduced by half |