Term
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Definition
| crosses of f1 offspring (offspring of true-breeders from 2 different types) |
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Term
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Definition
| giving offspring identical to the parents |
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Term
| mendel's theory of segregation |
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Definition
| diploid cells have pairs of genes on pairs of homologous chromosomes. the two genes of each pair are separated from each other during meiosis, so they end up in different gametes. |
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Term
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Definition
| expirimental intercross between f1 hybrids that are identically heterozygous for 2 pairs of genes |
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Term
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Definition
| offspring of a cross between two individuals that breed true for different forms of a trait (each one has inherited nonidentical alleles for the trait) |
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Term
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Definition
| the alleles an individual carries |
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Definition
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Term
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Definition
| the chance that each outcome of an event will occur is proportional to the number of ways in which the event can be reached |
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Term
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Definition
| an individual whose genotype is unknown is crossed with a homozygous recessive to reveal whether the plant is homozygous dominant or heterozygous |
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Term
| difference between sister chromatids and homologous chromosomes |
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Definition
| sister chromatids are duplicated versions of the same, whereas homologous chromosomes carry slightly different versions of the same type of gene (alleles) |
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Term
| term for a duplicated chromosome |
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Definition
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Term
| mendel's theory of independent assortment |
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Definition
| after meiosis ends, the genes on each pair of homologous chromosomes are assorted into gametes independently of how all the other pairs of homologues are sorted out |
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Term
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Definition
| the occurence of three+ alleles for one gene |
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Term
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Definition
| a pair of nonidentical alleles affecting two phenotypes are both expressed at the same time in heterozygotes |
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Term
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Definition
| one allele of a pair is not completely dominant over its partner, so the hetereozygote's phenotype is somewhere in between the two homozygotes (mixed, not masked) |
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Term
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Definition
| Pleiotropy is a phenomenon where one gene allele affects multiple traits. |
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Term
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Definition
| range of small differences in most traits |
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Term
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Definition
| the chromosome on which a particular gene is located |
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Term
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Definition
| different molecular forms of the same gene |
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Term
| phenotypic ratio of a heterozygous cross |
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Definition
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