| A | B |
| sex linked trait | trait that is carried only on the X chromosome |
| karotype | chart of pairs of chromosome |
| trisomy | having an extra chromosome, 47 instead of 46 |
| non disjunction | when chromosomes don't separate correctly |
| monosomy | one less chromosome, 45 instead of 46 |
| Turner syndrome | type of monosomy one less chromosome |
| autosomes | all the chromosome EXCEPT the sex chromosomes |
| pedigree | used to study traits over many generations |
| phenotype | what the world see, outward appearence |
| genotype | what is in your genetic makeup |
| huntington disease | autosomal dominant |
| cystic fibrosis | recessive, need two defective genes |
| amniocentesis | collection of cells used to determine if an unborn baby has a disability done one women over 35 |
| PKU | cannot digest phenylalanine |
| dwarfism | lack of growth hormone |
| albinism | lack of pigment in eyes and skin |
| hemophilia | sex linked recessive |
| Tay Sachs | buildup of lipids in the brain - early death |
| cystic fibrosis | 1 out 20 americans of northeastern European descent are carriers |
| Down syndrome | trisomy 21 |
| familial hypercholesterolemia | causes heart attacks at a young age |
| sickle cell anemia | abnormal red blood cells |
| klinefelter disease | individual with XXY |
| Lou Gehrig's disease ALS | degeneration of nerve cells sets in around age 50 |