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Definition
| Alternative forms of the same gene. |
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Definition
| A cross in which the true-breeding parents differ in two traits controlled by two gene pairs. |
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Definition
| Refers to a phenotype or allele that is expressed in a heterozygote. |
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Definition
| In a heterozygote (Aa), half of the products of meiosis will carry one allele (A) and the other half will carry the other allele (a). |
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Term
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Definition
| The fundamental physical and functional unit of heredity, composed of a segment of DNA on a chromosome encoding a functional product. |
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Definition
| The underlying genetic constitution of an organism. |
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Definition
| Carrying one copy each of two different alleles. |
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Term
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Definition
| Carrying two copies of the same allele. |
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Definition
| Situation in which the phenotype of a heterozygote is intermediate between the two homozygotes. |
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Term
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Definition
| Principle that segregation of alleles at one genetic locus does not influence segregation of alleles at other loci. |
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Term
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Definition
| Position of a gene along the length of a chromosome. |
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Term
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Definition
| A cross in which the true-breeding parents differ in a single trait controlled by a single gene pair. |
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Definition
| A family tree that uses standard genetic symbols to show the pattern of inheritance of a trait in a family. |
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Term
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Definition
| The observable (physical, behavioral) properties of an organism. |
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Term
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Definition
| A grid used as a graphic representation of the possible progeny resulting from random fertilization of the gametes produced by the parents in a cross. |
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Term
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Definition
| Refers to a phenotype or allele that is not expressed in a heterozygote. |
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Term
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Definition
| A cross of a phenotypically dominant individual of unknown genotype with a homozygous recessive individual in order to determine the genotype of the dominant individual. |
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