EBK BIOLOGY
10th Edition
ISBN: 8220100474729
Author: Martin
Publisher: Cengage Learning US
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Chapter 19.1, Problem 3C
INTERPRET DATA In a human population of 1000, 840 are tongue rollers (360 TT and 480 Tt), and 160 are not tongue rollers (tt). What is the frequency of the dominant allele (T) in the population?
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Calculate selection for the following scenario. In a population of prairie dogs living on a prairie,
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• Selection on genotype AA:
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Chapter 19 Solutions
EBK BIOLOGY
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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- You are a scientist studying a population of beetles. Beetle color is controlled by two alleles at a single genetic locus. AA beetles are blue, Aa purple, and aa pink. You count 30 blue beetles, 10 purple beetles, and 40 pink beetles. a) What is the frequency of the A allele? [ Select ] b) What is the observed frequency of the Aa genotype? 1 Select ] c) Under Hardy-Weinberg equilibrium, what is the expected frequency of the aa gentoype? [ Select ] d) Is this beetle population evolving? I Select ]arrow_forwardIn mice, the waltzing allele (w) that causes the mouse to run in circles due to an inner ear defect is recessive to the non-waltzing allele (W).In an ideal mouse population exhibiting Hardy–Weinberg equilibrium of 150 mice, 15% of the alleles are non-waltzing. What is the frequency of the recessive allele?Record your answer as a whole number percentage. Answer%arrow_forwardThe genetic composition of a population is 40 homozygous dominant (RR), 360 heterozygotes (Rr) and 600 homozygous recessive (rr). What is the observed frequency of the homozygous dominant individuals? [ Select] What is the observed frequency of the "r" allele? [ Select ] What is the expected frequency of the heterozygous genotype? [ Select ] If the Chi-squared value for this system is 2.40, is the population in Hardy-Weinberg equilibrium? Why? (note: the critical values for this test is 3.84), [Select ]arrow_forward
- You sample a population of 200 mice and find 140 Aa individuals, 50 AA individuals, and 10 aa individuals. What are the genotype frequencies for Aa, AA, and aa, respectively (the population may or may not be in HWE at this locus)? Group of answer choices Can’t answer without knowing the allele frequencies in the population 2pq, p squared, q squared (#Aa) (1), (#AA)(2), (#aa) (2) 0.7, 0.25, 0.05arrow_forwarda) A or B b) stay the same, increase or decrease c)stay the same, increase or decreasearrow_forwardThree genotypes occur in a population of birds: DD, Dd, and dd. D is the dominant allele, and encodes the dark - coloured birds; light - coloured mice have the genotype dd. There are initially 60 DD, 60 Dd, and 60 dd birds in a population, and the selection coefficient against light - coloured birds is 0.4. If 80% of each dark - coloured genotype survives (48 DD and 48 Dd), how many light-coloured birds would you expect to see in the next generation?arrow_forward
- You sample a population of blue-bellied lizards in the Mexican desert. You calculate allele frequencies to be 0.42 (A1) and 0.58 (A2). You genotype 1000 individuals, and discover that 130 are homozygous for the A, allele, 290 are homozygous for the A2 allele, and 580 are heterozygous. O No, this population is not in genetic equilibrium because there are more homozygotes and fewer heterozygotes than predicted under Hardy Weinberg equilibrium. O No, this population is not in genetic equilibrium because there are more heterozygotes and fewer homozygotes than predicted under Hardy Weinberg equilibrium. Yes, this population is in genetic equilibrium because allele frequencies are not changing. Yes, this population is in genetic equilibrium because the observed genotype frequencies match those that are predicted under Hardy Weinberg equilibrium.arrow_forwardIf all copies of a given locus have the same allele throughout the population, the allele frequency is (a) 0 (b) 0.1 (c) 0.5 (d) 1.0 (e) 10.0arrow_forwardA hypothetical population of 10,000 humans has 6848 individuals with the blood type AA, 2846 individuals with blood type AB, and 306 individuals with the blood type BB. What is the frequency of each genotype in this population? What is the frequency of the A allele? What is the frequency of the B allele? If the next generation contained 25,000 individuals, how many individuals would have blood type BB, assuming the population is in Hardy-Weinberg equilibrium?arrow_forward
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