genetics
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Created by:
Cjdoesminecraft on June 7, 2012
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17 terms
Terms | Definitions |
|---|---|
 heredity | the passing of traits from parents to offspring |
| genetics | The scientific study of heredity |
| trait | specific characteristic that varies from one individual to another |
| allele | one of a number of different forms of a gene |
| purebred | the offspring of many generations that have the same traits |
| hybrid | offspring of crosses between parents with different traits |
| dominant | trait that will show up in an organism's phenotype if gene is present |
| recessive | The inherited characteristic often masked by the dominant characteristic and not seen in an organism. |
| homozygous | having two identical alleles for a trait |
| genotype | genetic makeup of an organism |
| heterzygous | an organism in which two alleles for a particular trait are not identical |
| phenotype | physical characteristics of an organism |
| punnett square | a chart that shows all the possible combinations of alleles that can result from a genetic cross |
| sex linked gene | gene located on the X or Y chromosome |
| multiple allele | presence of more than two alleles for a genetic trait |
| pedigree | a diagram that shows the occurrence of a genetic trait in several generations of a family |
| mutation | change in a DNA sequence that affects genetic information |
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