8.3 & ch. 9 BIO TEST
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Created by:
jantolik072 on December 1, 2011
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12 terms
Terms | Definitions |
|---|---|
 gametes | Reproductive Cells |
| allele | an alternative form of a gene |
| crossing over | the interchange of sections between pairing homologous chromosomes during the prophase of meiosis MAKES A TETRAD |
| sexual reproduction | production of gametes through meiosis & union of sperm and egg cell. Makes a zygote that is genetically different from their parents, has a variety of genes, adapts to environment changes. |
| trait | inherited characteristic in living, passed down from 1 generation to the next |
| genetics | study of heredity |
| Gregor Mandel | a monk who studied characteristics of pea plants and developed the rule for the way traits were inherited. Called the father of genetics. |
| co-dominant inheritance | Neither allele is dominant so the alleles are both expressed but not as an intermediate, ex: red+white=red and white spots |
| incomplete dominance | creates a blended phenotype; one allele is not completely dominant over the other |
| Law of Dominance | this states that some alleles are dominant and others are recessive |
| Law of Segregation | alleles separate during gamete formation |
| Law of Independent Assortment | the law that states that genes separate independently of one another in meiosis |
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