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Chapter 16: Problem 379
A deck of playing cards is thoroughly shuffled and a card is drawn from the deck. What is the probability that the card drawn is the ace of diamonds?
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If a pair of dice is tossed twice, find the probability of obtaining 5 on both tosses.
Consider that in humans red-green colorblindness is controlled by a recessive X-linked gene, c. Assume that a normal-visioned woman, whose father was colorblind, marries a normal-visioned man. What is the probability that their first child will be colorblind?
According to early studies (performed by Wright) on guinea pig coat color, the total variance in a randomly mating strain was \(0.573\). The variance in an inbred strain was \(0.340\). From correlations between relatives in the randomly mating population the heritability (gene effect) was determined to be 38 percent of the total variance. Find the following: (a) variance due to gene effect; (b) variance due to epistasis and dominance.
You are in your laboratory late one night, working with eight separate containers holding the flour beetle, Tribolium castaneum. Three of the containers hold beetles homozygous for ebony bodies. The remaining five containers hold beetles homozygous for red bodies. Suddenly, the lights in your lab go out. You decide to remove your beetles to another lab so you can continue your work. If you can carry only one container at a time, what is the probability that the first container you select in the darkness contains homozygous ebony beetles and the second container contains homozygous red?
A sample of 25 female Drosophila were measured for number of eggs laid in a 24-hour period, and the following counts were recorded: \begin{tabular}{|c|c|c|c|c|} \hline 97 & 79 & 88 & 91 & 88 \\ \hline 86 & 104 & 89 & 91 & 92 \\ \hline 103 & 96 & 101 & 94 & 91 \\ \hline 92 & 94 & 95 & 88 & 89 \\ \hline 90 & 93 & 84 & 87 & 93 \\ \hline \end{tabular} Calculate for this sample: (a) mean number of eggs laid; (b) variance and standard deviation; (c) standard error of the mean.
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