It has been proposed that insect pests could be controlled by introducing transl

Question

It has been proposed that insect pests could be controlled by introducing translocations into wild populations. According to the proposal, 50% of the offspring of crosses between wild-type insects and insects carrying the translocation (as heterozygotes) would die.

Part A

Assume that the parents have the same chromosomes involved in the translocations and that the translocation breakpoints are not lethal. Also assume that for the translocation chromosomes involved, chromosomes with homologous centromeres never segregate together during meiosis.

What proportion of the progeny of crosses between two such translocation-carrying insects would die?

Enter your answer as a reduced fraction.

Explanation / Answer

According to the proposal, 50 percent of the offspring of crosses between insects carrying the translocation and wild types would die, and 10/16 of the progeny of crosses between translocation-bearing insects would die.

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