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Introductory Animal Genetics
Animal Science 221

Genotypic and Phenotypic Ratios
with Sex-Linked Lethal Genes

"LadyKiller" is a lethal gene located on the Z (sex chromosome) in chickens. The location of this gene is between the locus for silver color and the locus for light down.

Assume a male carrier for the lethal allele (lk) is mated to produce 300 live chicks. What is the expected number of males and females given the presence of this allele?

Expected Number
Males
Females
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