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| All different molecular forms of the same gene |
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| offspring inherit two gene pairs, each consisting of two nonidentical alleles. |
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| first-generaion offspring |
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| second-generation offspring |
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| Units of information about specific traits;passed from parents to offspring |
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Definition
| The particular alleles that an individual carries for a trait |
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| Describes an individual having a pair of nonidentical alleles |
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| An individual with a pair of recessive alleles, such as aa |
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| the location for a gene on a specific type of chromosome |
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| having the presence of two of each type chromosome in a cell nucleus at interphase |
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| experimental crosses between two parents that breed true (are homozygous) for different versions of a single trait |
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| having the presence of only half of the parental number of choromosomes in a spore, or gamete, as brough about by meiosis |
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Definition
| alteration to a gene's molecular structures, may change the gene's information about a trait |
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| Refers to an individual's obserable traits |
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| When the effect of an allele on a trait masks that of any recessive allel paired with it |
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| Allele whose effect is masked by the effect of the dominant allele |
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Definition
| An individual with a pair of dominant alleles, such as AA |
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Definition
| A pair of similar chromosomes, one obtained from the father and the other obtained from the mother |
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Definition
| Positive or negative effects on two or more traits owing to expression of alleles at a single gene locus. Effects may or may not emerge at the same time. |
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