Ch. 4 Sec. 1 & 2
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Created by:
mrskirkscience on May 8, 2011
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7 terms
Terms | Definitions |
|---|---|
 multiple alleles | three or more forms of a gene that code for a single trait |
| sex chromosomes | a pair of chromosomes carrying genes that determine whether a person is male or female |
| sex-linked gene | a gene that is carried on the X or Y chromosome |
| carrier | a person who has one recessive allele for a trait, but does not have the trait |
| genetic disorder | an abnormal condition that a person inherits through genes or chromosomes |
| pedigree | a chart or "family tree" that tracks which members of a family have a particular trait |
| keryotype | a picture of all the chromosomes in a cell arranged in pairs |
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