Lecture 14 - Lectur e 14: Linkage Keywords: Key Figures:...

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Unformatted text preview: Lectur e 14: Linkage Keywords: Key Figures: Linkage & Linkage Group Fig. 5.4 Parental type gamete Fig. 5.10 Recombinant type gamete Cross-over Recombination Frequency Map Unit (cM) Haplotype Suggested Problems: pg. 127 - S1b, S2, C9 C10, C11, E1, E11, E12, E14, E16, E17 Recall I ndependent assor tment and the exception X/X x X/Y Gametes Fr om mom Y gamete X/Y Fir st example: The types of gametes pr oduced in the mother will be r evealed in the male pr ogeny because it is hemizygous for X Cr ossing over her e N O Cr ossing over her e (in fact none in male flies) Look at X chr omosomes fr om females her e Nomeneclature moment: / is used to separate homologs F1 w+w y+y if you dont know that they are on the same chromosome F1 w+y/ wy+ if you know that w and y are on the same chromosome (the haplotypes) H er e, par ental gamete types ar e w+y and wy+ r ecombinant types ar e w+y+ and wy Expt. 5B & Fig. 5.10 Map Distance (cM - centiMor gans)...
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Lecture 14 - Lectur e 14: Linkage Keywords: Key Figures:...

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