The wing type of a particular species of insect is determined by a sex-linked gene with two alleles, A (which is dominant) and a. Spotted wings are recessive to plain wings. Questions (b) One male and one female are chosen at random from all the offspring of the mating, and are themselves mated. (i) Show that the proportion of male offspring of this second mating that you should expect to have plain wings is. (ii) Calculate the proportion of female offspring of this second mating that you should expect to have plain wings. (iii) What proportion of plain-winged female offspring of this second mating should you expect to be genotype AA?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The wing type of a particular species of insect is determined by a sex-linked
gene with two alleles, A (which is dominant) and a. Spotted wings are
recessive to plain wings.
Questions
(b) One male and one female are chosen at random from all the offspring of
the mating, and are themselves mated.
(i) Show that the proportion of male offspring of this second mating
that you should expect to have plain wings is.
(ii) Calculate the proportion of female offspring of this second mating
that you should expect to have plain wings.
(iii) What proportion of plain-winged female offspring of this second
mating should you expect to be genotype AA?
Transcribed Image Text:The wing type of a particular species of insect is determined by a sex-linked gene with two alleles, A (which is dominant) and a. Spotted wings are recessive to plain wings. Questions (b) One male and one female are chosen at random from all the offspring of the mating, and are themselves mated. (i) Show that the proportion of male offspring of this second mating that you should expect to have plain wings is. (ii) Calculate the proportion of female offspring of this second mating that you should expect to have plain wings. (iii) What proportion of plain-winged female offspring of this second mating should you expect to be genotype AA?
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