4) In a certain population, 49% of the individuals show the recessive phenotype. In nine generations, what will the frequency of the homozygous dominant genotype be assuming that the population is in the HWE? 49 ndividuals
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- In a large, randomly mating population, the frequency of an autosomalrecessive lethal allele is 0.20. What will the frequency of this allele be inthe next generation if all homozygotes die before reproducing?1. The frequency of PKU in the human population is 1 X 104.What is the expected frequency among the offspring of first cousins (F=1/16)? A D B.Cystic fibrosis is a homozygous recessive condition that affects 1 in 10,000 of the Hispanic populationin the United States. Calculate the frequency of the dominant allele, the frequency of the recessiveallele, and the percentage of heterozygous individuals (carriers) in the Hispanic population.Frequency of thedominant alleleFrequency of therecessive allele% homozygous dominant% homozygous recessive% heterozygous
- If the genotype frequencies in a population are 0.60 AA, 0.20 Aa, and 0.20 aa, and if the requirements of the HardyWeinberg principle apply, the genotype frequencies in the offspring generation will be: a. 0.60 AA, 0.20 Aa, 0.20 aa. b. 0.36 AA, 0.60 Aa, 0.04 aa. c. 0.49 AA, 0.42 Aa, 0.09 aa. d. 0.70 AA, 0.00 Aa, 0.30 aa. e. 0.64 AA, 0.32 Aa, 0.04 aa.75. Under the conditions of the Hardy-Weinberg equilibrium, what term in the equilibrium equation represents the expected genotype frequency for homozygous recessive individuals? p2 2pq 2p+q p2+2pq+q2 q2180- 170- Figure 1. For each of more than 200 human societies, the average height of the men is plotted against the average height of the women. The diagonal line shows where the points would fall if men and women were of equal height. From Rogers and Mukherjee (1992). 160- 150- 140- 140 150 160 170 180 Female stature (cm) tionry ysin.e 1. Briefly explain how the figure shows that human men and women are sexually dimorphic in height. Male stature (cm)
- 26. Snow geese (Chen caerulescens) come in two color types, white “snows” and “blues” with dark bodies. A single gene controls coloration, where the dark (“blue”) allele (D) is dominant. A population of 30,012 geese includes 9236 dark individuals. Genetic testing reveals that 7636 of the 9236 dark individuals are heterozygous (Dd). What is the actual frequency of allele D? 0.819 0.181 0.435 0.347In a large, randomly mating population, the frequency of the allele (s)for sickle-cell hemoglobin is 0.028. The results of studies have shownthat people with the following genotypes at the beta-chain locus producethe following average numbers of offspring:Genotype Average numberof offspring producedSS 5Ss 6ss 0a. What will the frequency of the sickle-cell allele (s) be in the nextgeneration?b. What will the frequency of the sickle-cell allele be at equilibrium?1) In cats, the allele for white fur(W) is completely dominant and will result in cats with all white fur in both the homozygous dominant and heterozygous cases. Suppose you look at 50 cats and notice that none of them are completely white. What's the allele frequency for the white fur allele in this population? 2) In carnations, the allele that makes red pigment (R) in flowers is incompletely dominant. Flowers that are red are homozygous dominant and those are pink are heterozygous. White flowers (r) are the result of the recessive allele. Suppose you look at a field of 100 carnations and notice 42 of the plants produce red flowers, 42 have pink flowers, and 16 produce white flowers. What's the allele frequency for both the red (R) and white (r) alleles?
- Cystic fibrosis (CF) is an autosomal recessive disorderthat occurs relatively frequently among people ofEuropean descent. In an Amish community in Ohio,medical researchers reported the occurrence of cysticfibrosis (CF) as being 1/569 live births. Using theHardy–Weinberg rule, estimate the frequency of carriers of the disease allele in this Amish population.4) 22% Tue 5:10 PM 202 lab 1 (1)(1).pdf (page 2 of 10) Edited Q Search 目|三▼ 可、 v Av 5. A population of mice may be brown (dominant phenotype) or white (recessive phenotype). Brown mice have the genotype BB or Bb. White mice have the genotype bb. The frequency of the BB genotype is .30. a. What is the frequeney of heterozygous mice? b. What is the frequency of the B allele? c. What is the frequency of the b allele? с. 6. Brown hair (B) is dominant to blond hair (b). If there are 150 brown haired people inAmong a particular population of 100 plants, red flowers are dominant and yellow flowers are recessive. F is the dominant allele and f is the recessive allele. 40 plants are homozygous dominant • 44 plants are heterozygous 16 plants are homozygous recessive Use the Hardy-Weinberg equation to calculate the equilibrium frequencies of each genotype