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Bio Chapter 7
| Term | Definition |
|---|---|
| Carrier | In biology, an individual who has one copy of a recessive autosomal allele that causes disease in the homozygous condition |
| Sex-linked gene | Gene that is located on a sex chromosome |
| X chromosome inactivation | Process that occurs in female mammals in which one of the X chromosomes is randomly turned off in each cell |
| Incomplete dominance | A condition in which a trait in an individual is intermediate between the phenotype of the individual's two parents because the dominant allele is unable to express itself fully |
| Codominance | A condition in which both alleles for a gene are fully expressed |
| Polygenic trait | Trait that is produced by two or more genes |
| Linkage map | Diagram that shows the relative locations of genes on a chromosome |
| Pedigree | A diagram that shows the occurrence of a genetic trait in several generations of a family |
| Karyotype | Image of all of the chromosomes in a cell |