| A | B |
|---|
| multiple alleles | three or more forms of a gene that code for a single trait |
| sex linked | passed from parent to child on a sex chromosome |
| x chromosome | female |
| y chromosome | male |
| carrier | a person who has one recessive allele and one dominant allele for a trait |
| pedigree | a chart that tracks which family members have a trait |
| genetic disorder | abnormal condition that a person inherits through genes or chromosomes |
| cystic fibrosis | The body produces abnormally thick mucus in the lungs and intestines; hard to breathe and digest food |
| sickle cell disease | abnormal hemoglobin, the protein of blood that carries oxygen |
| hemophilia | genetic disease where blood clots very slowly or not at all |
| Down Syndrome | genetic disorder due to an extra copy of chromosome 21 |
| karyotype | a picture of all the chromosomes in a cell, arranged in pairs |
| amniocentesis | a procedure to determine if an unborn baby will have any genetic disorders |
