heredity and genetics
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Created by:
jordanbrown_ on May 20, 2010
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14 terms
Terms | Definitions |
|---|---|
 heredity | the passing of traits from parents to ffspring |
| recessive trait | the form of an inherited trait that is hidden or masked by another form of the trait .identified bya lowercase letter. |
| dominant trait | a form of a inherited trait that masks the other form of the same thrait identified by a capitil letter. |
| group trait | `a trait shared by everyone in a group . |
| individual trait | individuel diffrences . |
| inherited trait | a trait an offspring receves from parents. |
| instinct | an inherited behavoir.a way of acting or behavingthat an animal is born with and does not have to learn. |
| genes | contain chemical instructions for inherited traits. they are stored on cell structures called chromosones. |
| law of dominance | an organisim receves two genes for each trait ,one from each parent one of the genes may be stronger or dominant and will show up , the trait of the weaker gene is hiddewn or does not show up and is called recessive. |
| alleles | the diffrent forms a gene may have for a trait . each trait has 2 aleles one from frmale one from male. |
| homozygous | an organisim with 2 allels for a trai that are exactily the same. also called a pure trait. |
| heterozygous | an organisim with 2 diffrent allels for a trait.also called a hybrid |
| ohenotype | an organisims apperance. |
| genotype | the combination of genes for one more specific traits.genotype refers to the actual genes an individual possesses that determin a particular trait.phenotype refers to the characteristics of the trait an individual displays.genotype for brown eyes might be Pp where the phenotype would be brown eyes. i |
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