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Definition
| an alternate form of a gene |
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Definition
| a discrete structure composed of DNA(a double-stranded molecule that contains gemetic code) and protein found only in the nuclei of cells |
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Definition
| a trait that covers of "masks" another allele |
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Definition
| HAVING OR ASSUMING the relationship of a child or offspring |
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Definition
| the genetic makeup of an individual; for a particular trait you can't always tell the genotype by looking at the phenotype |
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Definition
| having different alleles for the same trait on a chromosome; recessive and dominant are paired (so the dominant trait is observed) |
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Definition
| having the same allele for the same trait on a chromosome; two recessive genes are paired, or two dominant genes are paired |
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Definition
| having dominant alleles for the same trait on a chromosomes |
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Definition
| having recessuve alleles for the same trait on a chromosome. This in the only time a recessive trait will be phenotypically (physically) seen |
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Definition
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Definition
| traits that are under the influence of one genetic locus; also called simple traits (the trait is either one thing or another. there is no 'in between; mixing) |
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Definition
| the observable or detectable physical characters of an organism; the detectable expression of the genotype. what it looks like |
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Definition
| an organism who, when mated with another purebred with the same characters, will always produce purebreds; genotypically, purebreds are homozygous |
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Definition
| a trait that is not physically expresssed in heterozygotes, In the order for the trait to be expressed, there must be two copies of the allele |
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Definition
| scientific study of heredity |
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Definition
| process in sexual reproduction in which male and female reproductive cells join to form a new cell |
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Definition
| term used to describe organisms that produce offspring identical to themselves if allowed to self-pollinate |
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Definition
| specific characteristic that varies from one individual to another |
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Definition
| sequence of DNA that codes for a protein and thus determines a trait |
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Definition
| separation of alleles during gamete formation |
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Definition
| specialized cell involved in sexual reproduction |
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Definition
| likelihood that a particular event will occur |
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Definition
| diagram showing the gene combinations that might result from a genetic cross |
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Definition
| independent segregation of genes during the formation of gametes |
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Definition
| situation in which one allele is not completely dominant over another |
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Definition
| situation in which both alleles of a gene contribute to the phenotype of the organism |
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Definition
| three or more alleles in the same gene |
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Definition
| trait controlled by two or more genes |
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