| A | B |
|---|
| pedigree | record of an organism's ancestry |
| genetic engineering | genes moved from one organism to another |
| selective breeding | organisms with desirable traits are mated |
| testcross | cross between two organisms, one with recessive phenotype to learn genotype of other |
| carrier | does not show symptoms of disorder but has gene for it |
| codominance | presence of A and B genes produce AB blood type |
| Type O | blood type always in the homozygous condition |
| recombinant DNA | Formed when genetic material is altered |
| incomplete dominance | produces organisms that semm to be a blend between dominant and recesssive |
| polygenic inheritance | controlled by more than 2 gene pairs |
| color blindness and hemophilia | examples of sex linked traits |
| sex linked traits | carried on X chromosome |
| multiple alleles | blood type inheritance |
| Type AB | blood type always in the heterozygous condition |
| Type O | blood type with neither A nor B antigens |
| polygenic inheritance | determination of skin color in humans |
| Type AB | blood type with both A and B antigens |
| genotype | represented by letters |
| phenotype | decribed by words |
| Law of dominance | a gene can prevent the expression of another gene |
| Law of segregation | members of a gene pair separate during gamete formation so that only one of the pair goes to a gamete |
| sickle cell, albinism, hemophilia, cystic fibrosis | pedigrees could be studied to determine the probability of inheriting these disorders |
