| A | B |
|---|
| Non-disjunction | The chromosomes don’t separate properly |
| Down Syndrome | Non-disjunction of the 21st chromosome |
| Heterozygous | An allele with a dominant and recessive gene |
| Meiosis | Cell division of gametes |
| Homozygous dominant | An allele with 2 dominant genes |
| Homozygous recessive | An allele with 2 recessive gene |
| Law of dominance | One gene is dominant or “stronger” and masks the recessive gene |
| Mitosis | Cell division of somatic cells |
| Hybrid | heterozygous |
| Pure bred | homozygous |
| Law of segregation | The alleles separate independently into gametes |
| Law of independent assortment | Traits are passed randomly to their offspring |
| Phenotype | What the organism looks like (physical appearance) |
| Genotype | What is actually on the genes |
