| Term | Definition |
| genes | sequences of DNA that code for particular trait |
| genetic diseases | causes by defective alleles |
| autosomal recessive | genetic diseases or disorders that are carried by the recessive allele of a a gene of an autosome or non sex chromosome |
| autosomal dominant | disease and disorder that are carried on the dominant allele of a gene on a non-sex chromosome |
| sex linked disorders | dieseases thatare determined by genes found on the sex chromosomes. particularly the X chromosome |
| cysticd fibrosis | an autosomal recessive disease that affects the respriatory system |
| Tay-sachs | a disease that in an autosomal recessive disorder that is most common in the Jewish community |
| Huntington's | a disease that is autosomal dominant that leasts to the degeneration of the nervous system |
| achondroplastice dwarfism | autosomal dominant diesease in which the bone development is inhibited |
| sickle cell anemia | autosomal codominant disease that is common in African Americans |
| duchenne muscular dystrophy | a X-linked recessive disordere that can lasd to increasing mucscular eterioration |
| hemophillia | a X-linked recessive disease in which those afflicted are not able to produce a protein that is important for bloold clotting |