Question

A geneticist discovered a maternal effect gene in a new species of fly which controls the formation of head and thorax segmental development. The progeny of female flies bearing at least one copy of the dominant allele m+ were found to develop normally. However, the allele m had a lethal penetrance of 28%. In a mating experiment performed by the geneticist a female fly with the genotype mm was mated with a male fly with the genotype m+m. Assume that after mating the female laid 408 eggs. 1. How many eggs are expected to produce viable offspring? All calculations must be shown to receive full points. 2. How many of the progeny can be expected to be females with the genotype mm?

Answer 1

Please look in the image for solution:

1) 351

2) 147

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