| A | B |
|---|
| Thomas Hunt Morgan | presented the remaining evidence in tying chromosomes to specific inherited traits in 1910 |
| Drosophilia | a fruit fly with wideal organisms for studying genetics because they are easy to feed and maintain, and produce huge #'s of yound in only about 2 weeks, and have only 4 pairs of chromosomes |
| sex chromosomes | the sex-determining chromosomes |
| Nettie Stevens | discovered sex chromosomes |
| mutation | a spontaneous change in a gene or chromosomes |
| mutant phenotype | the phenotype produced by a mutation |
| sex-linked genes | genes found on the X or Y chromosome |
| sex-linked traits | traits determined by sex chromosomes |
