lect26sample - Cross sick female fly with wild type male...

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Unformatted text preview: Cross sick female fly with wild type male and get 343/350 progeny dead embryos. The escapers grow up to become fertile adults. You cross rare escaper males X escaper females and all offspring are wild type. How can this be? Answer on next page. Cross sick female fly with wild type male and get 343/350 progeny dead embryos. The escapers grow up to become fertile adults. You cross rare escaper males X escaper females and all offspring are wild type. How can this be? Could be maternal effect lethal gene (lethality not fully penetrant.) let+/let+ male X let/let female let+/let offspring, most die, few survive cross F1 escapers all wild type phene because mom heterozygous Could it be extranuclear inheritance? No, these would die. Could it be sex linkage? No Could it be genomic imprinting? No, 1/2 of these die ...
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This note was uploaded on 07/01/2011 for the course L 311 taught by Professor Forrester during the Fall '10 term at Indiana State University .

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lect26sample - Cross sick female fly with wild type male...

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