Within a population of butterflies, the color brown (B) is dominant over the color white (b) and 40% of all butterflies are white. Given this information and HWE calculate the following: a) The percentage of butterflies in the population that are heterozygous. b) The frequency of homozygous dominant individuals.
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- Within a population of butterflies, the color brown (B) is dominant over the color white (b) and 40% of all butterflies are white. Given this information and HWE calculate the following:
a) The percentage of butterflies in the population that are heterozygous.
b) The frequency of homozygous dominant individuals.
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- Within a population of butterflies, the color brown (B) is dominant over the color white (b). And, 40% of all butterflies are white. Given this information, calculate the following: a) The percentage of butterflies in the population that are heterozygous. b) The frequency of homozygous dominant individuals.In the Paraguayan Easter Atlantic Forest, a mating between a homozygous black yaguarundi and a homozygous blond yaguarundi will produce all brown yaguarundi offspring. When these brown F₁ yaguarundies are mated, their offspring consists of 2 white, 31 black, 154 brown, and 17 blond yaguarundies. A) Name what genetic interaction or ratio (depending on the ratio expected) may be occurring in this population? B) What are the observed and expec phenotypic ratios for these F2 progeny? C) Use a Chi-squared analysis to test your hypothesis (set a = 0.05). Be sure to report all values used in your comparisons (p-values, critical values, alpha value, df, etc), your hypothesis, and show your work.In a population of 500 individuals in Near East, the frequencies of the dominant and recessive alleles for autosomal recessive genetic disease PKU are 0,89 and 0,11 respectively. A is used to indicate the dominant allele, a is used to indicate the recessive allele. Assuming random mating, what are the expected genotype frequencies?
- How Can We Measure Allele Frequencies in Populations? In a population where the females have the allelic frequencies A = 0.35 and a = 0.65 and the frequencies for males are A = 0.1 and a = 0.9, how many generations will it take to reach HardyWeinberg equilibrium for both the allelic and the genotypic frequencies? Assume random mating and show the allelic and genotypic frequencies for each generation.About 8% of the men in a population are red-green color blind (because of a sex-linked recessive allele). Answer the following questions, assuming random mating in the population, with respect to color blindness. a. What percentage of women would be expected to be color blind? b. What percentage of women would be expected to be heterozygous? c. What percentage of men would be expected to have normal vision two generations later?A species of butterfly shows variation in the length of the antennae. You measure antennae in a butterfly population and find the mean to be 15 mm. You calculate a heritability of antennae length to be 1 (h2 = 1). %3D That summer, there is a severe drought. Many of the butterflies die and only a few survive to reproduce. The surviving butterflies have a mean antennae length of 17 mm. a) What is the predicted mean limb-length of the offspring of the surviving butterflies? [ Select ] b) What type of selection was acting on antennae length in these butterflies? [ Select ] c) Five years later, you go back and measure antennae length in this butterfly population again. Every butterfly in the population has antennae measuring 16 mm. What is the heritability of antennae length in this population now? [Select ]
- Cystic fibrosis (CF) is a recessive autosomal disorder. In certain populations of Northern European descent, the number of people born with this disorder is about 1 in 2500. Assuming Hardy- Weinberg equilibrium for this trait: A. What are the frequencies for the normal and CF alleles? B. What are the genotype frequencies of homozygous normal, heterozygous, and homozygous affected individuals? C. Assuming random mating, what is the probability that two phenotypically unaffected heterozygous carriers will choose each other as mates?In a moth population, 47 are brown, 15 are yellow, and 34 are black. What is the approximate probability of a moth being black?In a population at Hardy-Weinberg equilibrium, 190 out of 1000 individuals have polydactyly. Note that the trait is dominant. a. What is the frequency of the dominant and recessive alleles? b. How many are expected to be heterozygotes for the trait? c. How many are expected to be homozygous dominant?
- Approximately 1% of the magpies (Pica pica) in a hypothetical populations are albino. Assume that the albino phenotype is due to a recessive allele and that this population is in HardyWeinberg proportions at this locus. (a) What is the estimated frequency of the albino allele in this population? (b) What is the probability that the first progeny born to a mating between an albino and a normal magpie from this population will be albino? (Hint: what is the probability that the normal magpie is heterozygous, given the allele frequencies in this population?)Under the above conditions of reproductive discrimination against those with attached earlobes, if the population in this next generation is still 500,000 people, then the new genotypic frequencies will be: Homozygous dominants, unattached ear lobes: 0.34 Heterozygotes, unattached ear lobes: 0.48 Homozygous recessives, attached ear lobes: 0.18 What will be the allele frequencies for L and l in this generation? Did the frequency of the recessive allele (l), as compared to its frequency calculated in Part B, increase or decrease because of its deleterious effects on fitness? Does the possession of the recessive allele kill those who possess it? If those with attached ear lobes continue to be only half as successful in securing mates in each successive generation, what will happen to the frequency of the recessive allele in this population?Use the equation p2+2pq+q2+1.0 to solve the following problem. In a population of 100 squirrels there are 64 black ones, and the remaining are white. Black (B) is the dominant allele, and the white (b) is the recessive allele. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the black squirrels that are heterozygous (BB) for their coat color. A. 0.48 B. 0.16 C.0.40 D. 0.32 E.0.64