Chapter 5: Genetics
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18 terms
Terms | Definitions |
|---|---|
 skin color | an example of a human trait that is controlled by more than one gene. |
| carrier | a person who has one recessive and one dominant allele for a trait. |
| inbreeding | is the crossing of two individuals that have similar characteristics. |
| genetic engineering | the transfer of genes from one organism to another. |
| pedigree | a chart that tracks which members of a family have a particular trait. |
| square | represents a male in a pedigree |
| genetic disorder | an abnormal condition that a person inherits through genes or chromosomes. |
| down syndrome | people with an extra copy of chromosome 21. |
| genome | all the DNA in one cell of a diagram. |
| genetic counselors | professionals who help couples understand their chances of having a child with a particular genetic disorder. |
| hybridization | breeders cross two genetically different individuals. |
| clone | an organism that is genetically identical to the organism from which it was produced. |
| gene therapy | inserting work copies of a gene directly into the cells of a person with a genetic disorder. |
| multiple alleles | three or more forms of a gene that code for a single trait. |
| males | sex-linked recessive genes (such as hemophilia) are very common in males. |
| cystic fibrosis | a genetic disorder in which the body produces abnormally thick mucus. |
| selective breeding | the process of selecting a few organisms with desired traits to serve as parents of the next generation. |
| DNA fingerprinting | a person's DNA is cut into fragments. |
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