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12 Cards in this Set
- Front
- Back
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Genetic recombination is the process that produces ***.
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recombinants
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If the number of recombinants is less than 50%, then the genes are considered ***.
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linked
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*** are used to identify which genes are linked and to form a genetic map.
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Testcrosses
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In 1907, when *** discovered linked genes.
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Punnett
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In 1911, *** and his colleagues studied linkage in Drosophila melanogaster and helped develop our modern understanding of genetic linkage.
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Morgan
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In 1912, *** introduced the *** to describe the process of chromosome exchange by which recombinants arise.
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Morgan and Cattell
crossing-over |
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Cross-over occurs in *** when the four chromatids are ***.
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the tetrad stage of Prophase I
loosely aligned |
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Map units (mu): A cross over of *** between two genes is defined as 1 mu or 1 *** (***).
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1%
centimorgan (cM) |
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Two different phenotypes occur in the progeny: Therefore, a total of *** phenotypic classes will appear in the progeny,
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(2)3 = 8
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Two different phenotypes occur in the progeny. Therefore, a total of (2)3 = 8 phenotypic classes will appear in the progeny.
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(2)3 = 8
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Coefficient of coincidence = ***
and Interference = *** |
Observed double crossover frequency /Expected double crossover frequency
1 – coefficient of coincidence |
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A coincidence of 1 = ***
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all expected double crossovers occurred.
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