genetics vocabulary
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Created by:
charlotte1218 on March 2, 2012
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12 terms
Terms | Definitions |
|---|---|
 Heredity | The passage of traits from parents to offspring. |
| Allele | Different forms of a gene, wich produce variations in a genetically inherited trait. |
| Genetics | The study of how traits are inherited through the actions of alleles. |
| Hybrid | An offspring that was given different genetic information for a trait from each parent. Ex. Tt, Dd,Ff [also called HETEROZYGOUS] |
| Dominant | Describes trait thai is covered over, or dominates, another form of that triat[ and shows it's specific trait even if only one parent passes the gene to it's offspring]. |
| Recessive | Describes a trait that is covered over, or dominated , by another form of that trait and seems to disappear [except when both parents pass that gene to their offspring]. |
| Punnett Square | A tool to predict the probabillity of certain traits in offspring that shows the different ways alleles can combine. |
| Genotype | An organism genetic makeup, expressed in uppercase and lowercase letters for dominant and recessive alleles. Ex. TT, tt, Tt, DD,dd Dd. |
| Phenotype | An outward physical appearence or behavior of an organism, expressed in words. Ex. Brown hair, green eyes, red flower, tall horse. |
| Homozyguos | Describes an organism with two alleles that are the same for a trait- one from mom and the other dad are the same. Ex, TT, tt. |
| Heterozygous | Describes an organism with two different alleles for a trait- one from mom and a different one from dad. Ex. tt. |
| Mutation | Genes that are altered or copied incorrectly. |
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