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| one of the alternative forms of a gene that governs a characteristic, such as hair color |
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| the tendency of certain (dominant) alleles to mask the expression of their corresponding (recessive) alleles |
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describes a trait or an allele that is expressed only when two recessive alleles for the same characteristic are inherited
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the first generation of offspring obtained from an experimental cross of two organisms
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the second generation of offspring, obtained from an experimental cross of two organisms; the offspring of the F1 generation
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| Mendel's law that states that the pairs of homologous chromosomes separate in meiosis so that only one chromosome from each pair is present in each gamete |
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| Law of Independent assortment |
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Definition
| the law that states that genes separate independently of one another in meiosis |
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| parental generation, the first two individuals that mate in a genetic cross |
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| a genetically determined characteristic |
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| a condition in which both alleles for a gene are fully expressed |
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a condition in which a trait in an individual is intermediate between the phenotype of the individual's two parents because the dominant allele is unable to express itself fully
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| a cross between individuals that have different alleles for the same gene |
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a cross between individuals that involves one pair of contrasting traits
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| the entire genetic makeup of an organism; also the combination of genes for one or more specific traits |
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| an organism's appearance or other detectable characteristic that results from the organism's genotype and the environment |
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a graphic used to predict the results of a genetic cross
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the crossing of an individual of unknown genotype with a homozygous recessive individual to determine the unknown genotype
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describes an individual that has two different alleles for a trait
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describes an individual that has identical alleles for a trait on both homologous chromosomes
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