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| the science of heredity and of the mechanisms by which characteristics are passed fromone generation to the next |
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| a segment of DNA whose sequence of nucleotides codes for a specific protien |
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| alternate forms of a gene each affect the heredity trait somewhat differently |
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| characteristic of an organism |
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| cross between two parents tht differ in 1 trait |
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| the trait the is expressed in a heterozygous orgamism |
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| a trait whose expression is hidden in a hetrozygous organism |
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| gentic make up of an organism |
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| having a identical alleles for a trait |
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| have two different allels for a trait |
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| during meiosis the two allels for a given trait separate ony when one allele ends up in each gamete |
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| affected males = affected females |
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| does not skip a generation - heterozgous affected |
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used to determine the gentotyupe of an individual showing a dominant trait
mate with a recesive
examine offspring |
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| principle of independent assortment |
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| alleles for one characteristtic behave independently of alleles for other characteristic during gamete formation |
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| 3 or more alleles of the same gene are found within a population |
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| when both allels contribute to the phenotype of a heterozygote |
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| hybrids have a phenotype that is intermediate between both parents |
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| expression controlled by several genes and influenced by the environment |
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| gene that are located on the same chromosome |
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