5. The allele for a hitchhiker's thumb is dominant over a straight thumb. In a population of 1000 Individuals, 510 show the dominant phenotype. How many individuals would you expect for each of the three possible genotypes for this trait.

5. The allele for a hitchhiker's thumb is dominant over a straight thumb. In a population of 1000 Individuals, 510 show the dominant phenotype. How many individuals would you expect for each of the three possible genotypes for this trait.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter19: The Evolution Of Populations

Section: Chapter Questions

Problem 1VCQ: Figure 19.2 In plants, violet flower color (V) is dominant over white (v). If p = .8 and q = 0.2 in...

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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.
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 0.347
6. In a population of mice, coat color is controlled by a single additive locus. BB mice are black, bb mice are white, and Bb mice are grey. The population is currently in HWE, with 1% of the mice having the white phenotype. Grey mice have twice as many offspring as black or white mice. What will be the frequency of the b allele in the next generation? The answer is supposed to be 0.16, can you explain how to get to this?
1. In wild koalas (Phascolarctos cinereus), the allele E, for pointed toes, is dominant over e, for rounded toes. In a particular herd of wild pigs that is in Hardy-Weinberg Equilibrium, there are 652 koalas with pointed toes and 388 koalas with rounded toes. Calculate the allelic frequencies within this population AND the expected genotype frequency of heterozygous individuals.
8. Hitchhiker's thumb is the ability to bend the thumb backwards at least 45° is due to a single dominate allele "T". Hitchhiker's thumb Straight thumb You sampled the 48 students in your Biology of Populations class, and determined that 15 individuals have thumbs that could hitch a lift (i.e. bend > 45°). a) Calculate the predicted frequencies of all the genotypes. b) Given what you know about the conditions required for the Hardy-Weinberg principle to be met, do you think this is a reliable prediction? Explain your answer. ||
1. Consider a locus having two alleles Aj and A2, If the homozygote A1A1 and the heterozygote A1A2 have the same fitness of 1, and the homozygote A2A2 has a fitness s+1, then phenomenon is called complete dominance. What will be the change in the frequency of allele A2 per generation ?
2 2. A survey was conducted for a certain trait (the ability to roll tongue or inability to roll the tongue) in a population. The result shows that 215 of the respondents can roll their tongue and 85 cannot roll their tongue. The picture below shows a person rolling his tongue. Rolling the tongue into a tube shape is often described as a dominant trait. If the dominant allele is represented by R (can roll tongue) and r represents the recessive allele, calculate the phenotypic frequencies, allele frequencies, the expected numbers of the three genotypic classes and the expected numbers of the two phenotypic classes (assuming random mating). Using chi-square test, determine whether or not this population is in Hardy-Weinberg equilibrium. REMEMBER: Genotype Phenotype Can roll tongue Cannot roll tongue HWE term p2 and 2pq q2 RR and Rr rr
1. Consider a locus having two alleles A1 and A2, If the homozygote A1A1 and the heterozygote A¡A2 have the same fitness of 1, and the homozygote A2A2 has a fitness s+1, then phenomenon is called complete dominance. What will be the change in the frequency of allele A2 per generation ?
14. In class we explored how genotype frequencies can change between generations. In our experiment, we started with a population in which every individual was heterozygous for a few traits of interest. The data for the 11 offspring of these heterozygotes are below. Make sure you show at least some work for partial credit. Frecueles Eje coloN Freckles Genotype FF Eye Shape Genotype EE Eye Color Genotype RR (P 3 (P 3 Ff 5 Ee .0.3 1-0.3 3 RB 7 ff 1 ее Phenotypes Freckles No freckles Phenotypes Phenotypes Red |-0.3 FF, Ff Circle EE, Ee RR Ro.HFF) ff Star ее Purple Blue RB or BR 20.42 BB a) What were the initial allele frequencies for freckles in the starting population? FF=0.42 b) What percentage of the starting population had purple eyes? c) What are the allele frequencies for freckles after one generation? (FF)P= 0.7 (FN 2pf=0.42 (fF) = 03 d) What percentage of the population had purple eyes after one generation? e) Are the genotype frequencies for eye shape what you would expect based…
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…
5. The scatterplots show the relationship between the average phenotype of parents (x- axis) and that of their offspring (y-axis) for two traits in a variety of tropical sweet corn. One trait is stalk height, which has a heritability of 75%; and the other is ear length, which has a heritability of 25%. Which scatterplot does represent stalk height? Please briefly justify your answer. 3 3 Trait K Trait Q -1 -2 -3 -3 -3 -2 -1 2 -2 -1 Mean of parents Mean of parents Blology: How Life Works, Third Edition O 2019 Macmillan Learning A) Ear length and stalk height are both trait Q B) Ear length is trait Q, and stalk height is trait K. C) Ear length and stalk height are both trait K. D) Ear length is trait K, and stalk height is trait Q. Mean of offspring Mean of offspring 2.
3. In a given 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)?