2. The ability to tongue-roll is controlled by a dominant allele T. In a survey of 700 high school students, it was found that 240 were tongue-rollers. Assuming that the population is in Hardy- Weinberg equilibrium; a. Compute the frequency of the dominant allele (4 decimal places). b. Compute the frequency of the recessive allele (4 decimal places). c. Compute the frequency of marriages between non-tongue rollers (4 decimal places) 2

2. The ability to tongue-roll is controlled by a dominant allele T. In a survey of 700 high school students, it was found that 240 were tongue-rollers. Assuming that the population is in Hardy- Weinberg equilibrium; a. Compute the frequency of the dominant allele (4 decimal places). b. Compute the frequency of the recessive allele (4 decimal places). c. Compute the frequency of marriages between non-tongue rollers (4 decimal places) 2

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Description: Follow the instructions. Typewritten for an upvote. No upvote for handwritten. PLEASE SKIP IF YOU HAVE ALREADY DONE THIS. Thank you 2. The ability to tongue-roll is controlled by a dominant allele T. In a survey of 700 high schoolstudents, it was fou

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter19: Evolutionary Change In Populations

Section: Chapter Questions

Problem 3TYU: The MN blood group is of interest to population geneticists because (a) people with genotype MN...

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1. In a population at Hardy-Weinberg equilibrium, 190 out of 1000 individuals have polydactyly. Note that the trait is dominant. (6 pts) a. What is the frequency of the dominant and recessive alleles? b. How many individuals in the population are expected to be heterozygotes? c. How many individuals in the population are expected to be homozygous dominant?
1)A population of 500 individuals has 231 homozygous dominant individuals, 218 heterozygotes, and 51 homozygous recessive individuals. Determine the frequency of the recessive genotype and frequency of the recessive allele, respectively. a. Frequency of Recessive Genotype Frequency of Recessive Alleles 0.32 0.10 b. Frequency of Recessive Genotype Frequency of Recessive Alleles 0.10 0.32 c. Frequency of Recessive Genotype Frequency of Recessive Alleles 0.90 0.10 d. Frequency of Recessive Genotype Frequency of Recessive Alleles 0.68 0.32 2)A rabbit warren has 300 individuals. The coat colour of rabbits is expressed through incomplete dominance. The coat colour can be dark brown, light brown, or white.There are 81 dark brown rabbits, 150 light brown rabbits, and 69 white rabbits. Assume that all of the conditions are met for a population in Hardy–Weinberg equilibrium.What is the light brown genotype frequency,…
8. Use the Hardy-Weinberg Equations to answer the questions below. (Assume there are only 2 alleles in the population for the given trait.) docx The dominant allele frequency is 74%. What is the recessive allele frequency? b. What are the genotype frequencies for the alleles in question 8A above? chomp (1)
1. The ability to taste the compound PTC is controlled by a dominant allele T, while individuals homozygous for the recessive allele (t) cannot taste PTC. In a population consisting of 500 individuals, 347 are tasters and 153 are non-PTC tasters. Calculate the frequency of the T and t alleles in this population, and frequency of the genotypes.(Please train yourself to use the Hardy-Weinberg equation.)To present your answers, follow the format in the picture below.
In a population that has been mating randomly for many generations, two 3. phenotypes are segregating; one is due to a dominant allele 6, the other to a recessive allele g. The frequencies of the dominant genotype is 0.7975. Estimate the frequency of: i. The recessive genotype i. The dominant and recessive alleles. ii. What is the frequency of the dominant phenotypes?
1. Certain flowers are either red (dominant) or white (rr). 91% of the flowers are red. Using the equations, calculate the frequency of the R allele. First you replace R and r for p and q. Thus we know that q2 = .09, because only the homozygous recessives will be white. *changed away from percentages to work the math more easily* What is the frequency of the R allele in this population? 2. In a coastal city in Nigeria, the incidence of Sickle-Cell disease is 4% of the population. Based on this information, what is the frequency of this allele in the population of that city? 3. In a given human population, only the "A" and "B" alleles are present in the ABO system; there are no individuals with type "O" blood or with O alleles in this particular population. If 200 people have type A blood, 75 have type AB blood, and 25 have type B blood, what are the alleleic frequencies of this population (i.e., what are p and q)? 4. An allele W, for white wool, is dominant over allele w, for…
p? + 2pq + q? = 1 (to determine the genotype frequencies) and p+q =1 (to determine the allele frequencies) p = frequency of the dominant allele in the population q = frequency of the recessive allele in the population p = percentage of homozygous dominant individuals q?: = percentage of homozygous recessive individuals 2pq = percentage of heterozygous individuals Homework Problems For these problems you will need to use a calculator and can round for the percentages. the nearest who number Example problem: You have sampled a population in which you know that the percentage of the homozygous recessive genotype (aa) is 36%. Using that 36%, calculate the following: A. The frequency of the "aa" genotype. Answer: 36% (given) B. The frequency of the "a" allele. Answer: The frequency of aa is 36%, which means that q? = 0.36. If q? = 0.36, then q = 0.6, because 0.62 is equal to 0.36. Since q equals the frequency of the a allele, then the frequency is 60%. C. The frequency of the "A" allele.…
1. p + q = 1 2. p2+ 2pq + q2 Male grey tree frogs vary in the duration of call they give dug in mating seasons. In a sample from a population of frogs, 68/212 male frogs are "short callers." If "short callers" are homozygous recessive, what is the frequency of the dominant allele in this sample? 1. 0.67 2. 0.32 3. 0.57 4. 0.43
. A farmer have 2000 cows. A total of 1500 of the cows are browh coated and the rest are white coated. Allele B for the brown coat is dominant, while allele b for the white coat is recessive: Assume that the population of the cows is at genetic equilibrium and bred randomly. Calculate the frequency for the dominant and recessive alleles of the population. i. Calculate the genotype frequencies in the F1 generation if the cows are left to breed randomly. ii. If the farmer adds another 1000 homozygous dominant brown cows into the populations, calculate the new dominant allele frequency. ii. iv. State three conditions for the Hardy Weinberg equilibrium to be achieved.
1.: Male side-blotched lizards display throat color polymorphisms; some males have orange throats, some have yellow throat stripes, and some have blue throats. The following table gives genotypes observed in a California population in 1993. Genotype Individuals 2 10 oy ob 14 yy 32 yb bb 42 Please calculate: a) The allele frequencies. b) The observed heterozygosity. Note that you have more than one type of heterozygote at this locus. c) The expected heterozygosity.
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?
1. Widow's peak allele (W) is dominant to straight hair line (allele w). In a population of 1000, there are 760 persons with widow's peak. a. What is the frequency of genotype WW? b. What is the frequency of the heterozygotes?