1. This graph shows the relationship between the mean height of human parents and the mean height of their adult offspring in a particular population. (The “midparent height" is the average height, in inches, of the mother and father.) a. List any of the four conditions necessary for natural selection that are supported by the information in this graph.
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- The calculated chi-square value which is 0 is less than the critical value which is 5.991 (under the degree of freedom 2). What is the probability of the computed chi-square value? And is it part of the population in Hardy-Weinberg equilibrium?In a population with 1000 individuals and at Hardy-Weinberg equilibrium, the frequency of individuals with galactosemia is 4%.a. What are the frequencies of the dominant and recessive alleles?b. What is the expected frequency of the homozygous dominant in the population?c. What would be the expected frequency of the heterozygous dominant after five generations?In a population of locusts, the mean wing length is 47 mm, the selection gradient on wing length is β = 0.12/mm, the phenotypic variance for wing length is P = 3.6 mm2, and the heritability of wing length is h2 = 0.27. In addition, we know that the additive genetic covariance between wing and leg length is 0.60 mm2. What is the expected evolutionary change in mean leg length due to selection on both wings and legs? Repeat these calculations to predict what will happen to wing length as a result of the selection on both wings and legs. What do you predict the average wing and leg lengths will be in the next generation?
- If there are 12 rock pocket mice with dark fur and 4 with light-colored fur in a population, what is the value of q? Remember that light-colored fur is recessive. If the frequency of p in a population is 60% (0.6), what is the frequency of q? In a population of 1000 rock pocket mice, 360 have dark-colored fur. The others have light-colored fur. If the population is in Hardy-Weinberg equilibrium, what percentage of mice in the population are homozygous dominant dark-colored mice?The frequency of children homozygous for the recessive allele for the genetic disease cystic fibrosis is about one in 2,500. Assuming the population is in Hardy-Weinberg equilibrium, what is the expected frequency of heterozygotes (carriers) in the populat ion?If p2 = 0.36, what percentage of the population has the recessivephenotype, assuming a Hardy-Weinberg equilibrium?
- Sickle-cell anemia is a recessive disease that afflicts approximately 1 in 12 African Americans, meaning that the frequency of ss homozygotes is 0.09. Assuming the African American population is in Hardy-Weinberg equilibrium, what is the frequency of Ss carriers in this population?Cystic fibrosis is a genetic disease mostly affecting people of European descent that is caused by a recessive allele. You sample 1000 people for this allele and find 772 homozygous normal individuals, 221 heterozygotes, and 7 people homozygous for cystic fibrosis. Is this population in Hardy-Weinberg equilibrium?The gamma globulin of human blood serum exists in two forms, Gm(a+) and Gm(a-), specified respectively by an autosomal dominant gene Gm(a+) and its recessive allele Gm(a-). Broman et al. (1963) recorded the tabulated phenotypic frequencies in three Swedish populations. Assuming the populations were at Hardy-Weinberg equilibrium, calculate the frequency of heterozygotes in each population.
- If a population is in Hardy-Weinberg equilibrium for the multiple alleles A+, A and a, whose frequencies are p= 0.60 for A+, q= 0.20 for A, and r = 0.20 for a, what percentage of the population is expected to be heterozygous?Assume that the frequency of gene B in a hypothetical population Is 0.63, that there are only two alleles (B and b) of the gee in the population, that allele B is dominant over allele b, that neither allele has a selective advantage over the other, and that the population is at equilibrium with regard to this particular gene. And how many individuals in this population are expected to be of genotype BB according to the Hardy-Weinberg formula? (Assume that the total population size is 150) 71 52 118 60 131In cats, all-white color is dominant over colors other than all-white. In a population of100 cats, 19 are all-white. Assuming that the population is in Hardy–Weinbergequilibrium, what is the frequency of the all-white allele in this population?