Lecture 10 (deleted 4f50fba2-1dcdc3-ad76d0c5)

The resul7ng nonrecombinant progeny are s r c

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Unformatted text preview: nt progeny (two most numerous phenotypes). (2) Iden7fy the double ­crossover progeny (two least numerous phenotypes) (3) Compare the phenotype of nonrecombinant progeny to double ­ crossover progeny. The trait that differs is encoded by the middle gene. Note: the gene order here is arbitrary 7 Concept check 1: A three ­point testcross is carried out between three linked genes. The resul7ng non ­recombinant progeny are: s+ r+ c+ and s r c The double crossover progeny are: s+ r+ c and s r c+ Which is the middle locus? (A) s, (B) r, (C) c, (D) Cannot be determined, (E) I am not sure. 8 4 2/23/12 Concept check 1: A three ­point testcross is carried out between three linked genes. The resul7ng non ­recombinant progeny are: s+ r+ c+ and s r c The double crossover progeny are: s+ r+ c and...
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