Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 19.2, Problem 2C
INTERPRET DATA In a population at genetic equilibrium, the frequency of the dominant
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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?
If the Hardy-Weinberg equation enables us to use information on genotype and allele frequencies to predict the genotype frequencies of the next generation. In a population of 100,000 people carrying the recessive allele a for albinism, there are: 100 aa albinos and 1800 Aa heterozygous carriers.
What is a frequency of heterozygous carriers in the next generation?
Calculate the frequency for the A allele and a allele.
How this will chance the frequency of alleles in a population for the following generation?
An autosomal locus has alleles A and a.
The allele frequencies in a population at Hardy Weinberg equilibrium are
p = Freq(A) = 0.5
q = Freq(a) = 0.5
What is the frequency of homozygous wild-type (AA) in this population?
Enter a single number between 0 and 1, for example, 0.33
Chapter 19 Solutions
Biology (MindTap Course List)
Ch. 19.1 - Define what is meant by a populations gene pool.Ch. 19.1 - Distinguish among genotype, phenotype, and allele...Ch. 19.1 - Prob. 1CCh. 19.1 - Can the frequencies of all genotypes in a...Ch. 19.1 - INTERPRET DATA In a human population of 1000, 840...Ch. 19.2 - Discuss the significance of the HardyWeinberg...Ch. 19.2 - Prob. 4LOCh. 19.2 - INTERPRET DATA In a population at genetic...Ch. 19.2 - INTERPRET DATA In a population at genetic...Ch. 19.2 - INTERPRET DATA The genotype frequencies of a...
Ch. 19.3 - Prob. 5LOCh. 19.3 - Discuss how each of the following...Ch. 19.3 - Distinguish among stabilizing selection,...Ch. 19.3 - Which microevolutionary force leads to adaptive...Ch. 19.3 - Why is mutation important to evolution if it is...Ch. 19.3 - Which microevolutionary forces are most associated...Ch. 19.3 - Prob. 4CCh. 19.4 - Prob. 8LOCh. 19.4 - Prob. 1CCh. 19.4 - Prob. 2CCh. 19.4 - How can researchers test the hypothesis that...Ch. 19 - The genetic description of an individual is its...Ch. 19 - In a diploid species, each individual possesses...Ch. 19 - The MN blood group is of interest to population...Ch. 19 - If a populations allele and genotype frequencies...Ch. 19 - Prob. 5TYUCh. 19 - The continued presence of the allele that causes...Ch. 19 - According to the HardyWeinberg principle, (a)...Ch. 19 - Prob. 8TYUCh. 19 - Mutation (a) leads to adaptive evolutionary change...Ch. 19 - Which of the following is not true of natural...Ch. 19 - If all copies of a given locus have the same...Ch. 19 - Prob. 12TYUCh. 19 - EVOLUTION LINK Given that mutations are almost...Ch. 19 - Prob. 14TYUCh. 19 - Prob. 15TYUCh. 19 - EVOLUTION LINK Evolution is sometimes...Ch. 19 - INTERPRET DATA The recessive allele that causes...Ch. 19 - PREDICT You study males in populations of a...Ch. 19 - Prob. 19TYU
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- If 120 of 200 alleles are dominant alleles, then what percentage of the alleles are dominant alleles? A-12% B-40% C-60% D-120% What percentage of the alleles are recessive alleles? E-8% F-40% G-60% H-80% Which of the terms of the Hardy-Weinberg equations represents the frequency of the recessive allele in the gene pool? A-p^2 B-p C-2pq D-q^2arrow_forwardAn autosomal locus has alleles A and a. The allele frequencies in a population at Hardy Weinberg equilibrium are p = Freq(A) = 0.1 q = Freq(a) = 0.9 What is frequency of heterozygotes in this population? Enter a single number between 0 and 1, for example 0.33arrow_forwardUse 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.0.64arrow_forward
- Consider the Hardy-Weinberg equations. If the frequency of a recessive allele is 0.3, what is the frequency of the dominant allele?arrow_forwardIn a system that meets the requirements for Hardy-Weinberg equilibrium 25% of individuals exhibit the recessive phenotype for a trait. What is the allele frequency of the dominant allele?arrow_forwardQ: In a certain species of plants, violet flower color (V) is dominant over white flower color (v). If p = 0.4 and q = 0.6 in a population of 500 plants, I want you to explain why red is wrong and highlighted is right.arrow_forward
- This lab exercise requires that we count certain Mendelian traits among students present in the lab. Your professor will explain each trait being addressed and will then ask students to identify if they are dominant or recessive for that specific trait. The collected traits will then be plugged into the Hardy-Weinberg Equilibrium formula in order to calculate frequency of Homozygous dominant, Heterozygous and Homozygous recessive individuals in the same. p2 + 2pq + q2 = 100 given data: trait: hair swirl 19 individuals total. 10 had the homozygous dominant hair swirl trait: clockwise the nine other were recessive please do a step by step explanation with the calculation using this data, as I am very unfamiliar with what values mean what and the equation itself thank you!arrow_forwardImagine you are studying a population of finches on one of the Galápagos Islands. You have been recording many of the birds’ physical traits, including the length of both wings. You observe that for 80% of individuals measured, the length of the left wing is not significantly different from the length of the right wing (in other words, they are symmetrical). But for about 20% of birds measured, the wing lengths are asymmetrical. This distribution is true from generation to generation. Suddenly, a rare 5-day windstorm takes over the island. After the storm, you spend the next several days netting each bird on the island that survived the storm. You discover that 85% of the birds with symmetrical wings survived the storm, whereas only 5% of the birds with asymmetrical wings did. a. Propose a hypothesis to explain this observation. b. If such storms become increasingly common due to changes in climate, how might you expect the population to change over time with respect to wing symmetry?arrow_forwardIf the starting frequency of AA is 0.7, what is the frequency of the a allele? Review the Hardy- Weinberg Equilibrium lecture video if you are unsure. (hint: in this initial set-up, the population is not at Hardy-Weinberg equilibrium, so finding the square root of the frequency of homozygotes will not work).arrow_forward
- Parent Generation BB BB Bb Bb Bb Bb Bb Bb bb bb Rabbits with the brown coat color allele (B) are dominant over rabbits with the white coat color allele (b). A small population of rabbits (Parent Generation) has 2 individuals homozygous for B, 6 individuals that are heterozygous, and 2 individuals homozygous for b. What would you predict the frequencies of alleles B and b to be in the next (first) generation if this population is not evolving Edit View Insert Format Tools Tablearrow_forwardUsing the HardyWeinberg Law in Human Genetics Suppose you are monitoring the allelic and genotypic frequencies of the MN blood group locus (see Question 2 for a description of the MN blood group) in a small human population. You find that for 1-year-old children, the genotypic frequencies are MM = 0.25, MN = 0.5, and NN = 0.25, whereas the genotypic frequencies for adults are MM = 0.3, MN = 0.4, and NN = 0.3. a. Compute the M and N allele frequencies for 1-year-olds and adults. b. Are the allele frequencies in equilibrium in this population? c. Are the genotypic frequencies in equilibrium?arrow_forwardHow 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.arrow_forward
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