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Unformatted text preview: relationships CAN’T be determined? Why? You cannot establish ANY linkage relationships, because each parent is only heterozygous at one locus. To establish linkage between two loci, ONE parent must be heterozygous at BOTH loci – otherwise, you can’t tell if the alleles are segregating independently or not. 4. To further test the linkage relationships of these genes, what cross should you do next? The next cross would be Cc Bb Ll X cc bb ll. B) You take a curly, black, long-haired dog from the previous mating, and cross it with a straight, white, short-haired dog. Puppies emerge in the following proportions: curly, black and short - 25% curly, white and short - 25% straight, black and long - 25% straight, white and long - 25% What are the linkage relationships between the genes? C is linked to L, in repulsion. The original parents: Cl/cl; b/b X cL/cL; B/b F1 cross: Cl/cL; B/b X cl/cl; b/b....
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This note was uploaded on 10/27/2009 for the course BIO SCI 05580 taught by Professor Marsh during the Fall '09 term at UC Irvine.
- Fall '09