Which statement about the genetic basis of races in humans is correct? You are more closely related to all people of your own race than you are to individuals of different races Differences in health outcomes among members of different racial groups are primarily due to genetic differences between these groups Racial differences only account for about 3-5% of genetic variation in humans Different racial groups are separated by hundreds of thousands of years of evolution

Which statement about the genetic basis of races in humans is correct? You are more closely related to all people of your own race than you are to individuals of different races Differences in health outcomes among members of different racial groups are primarily due to genetic differences between these groups Racial differences only account for about 3-5% of genetic variation in humans Different racial groups are separated by hundreds of thousands of years of evolution

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter19: Population Genetics And Human Evolution

Section: Chapter Questions

Problem 19QP: Measuring Genetic Diversity in Human Populations The theory of natural selection has been summarized...

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QUESTION 8 Morphological differences are abundant among many species. We make assumptions about why adaptations exist, but to understand whether a specific trait is a adaptive and why, researchers must create experiments that have all the following, EXCEPT: a. replication of each treatment to ensure reliability of results. b. hypotheses that are testable and falsifiable. c. include control groups. d. exceedingly small sample sizes in each treatment group. e. experimental design that enables all full interpretation of differences.
QUESTION 16 You are examining a beloved population of trillium in the backyard of your childhood home. You recall as a child that flowers were bright white. As you return to the population you note that many (but not all) of the flowers have a faint purple vertical stripe in the middle of each petal. List each of Darwin’s postulates and what must be true about your population if it has undergone evolution by natural selection for petal color.
Question 3. There are 100 students in a class. Ninety-six did well in the course whereas four blew it totally and received a grade of F. Sorry. In the highly unlikely event that these traits are genetic rather than environmental, if these traits involve dominant and recessive alleles, and if the four (4%) represent the frequency of the homozygous recessive condition, please calculate the following: A) The frequency of the recessive allele. B) The frequency of the dominant allele. C) The frequency of heterozygous individuals. Question 4 Within a population of butterflies, the colour brown (B) is dominant over the colour white (b). And, 40% of all butterflies are white. Given this simple information, which is something that is very likely to be on an exam, calculate the following: A) The percentage of butterflies in the population that are heterozygous. B) The frequency of homozygous dominant individuals. Question 5 A rather large population of organisms have 396 red-sided individuals…
QUESTION 19 You used a QTL (locus A) to find the causal locus of a phenotype of interest (locus B). You know that there is selection on locus B in your population, but A is just a neutral marker you used in your QTL analysis. Under what conditions do you expect allele frequencies to change at locus A? a. It will change, but only when not in LD with B b. It will not change regardless of whether it is in LD with B or not c. It will change, but only when it is in LD with B d. It will change regardless of whether it is in LD with B or not
QUESTION 23 Allele frequencies for eye color in a population of hippogriffs is p=0.73. How many individuals would you expect to be heterozygous in a population 150? (Assume HWE)
Question 2. A widow's peak hairline is a dominant trait and a straight hairline is a recessive trait. What will be the genotypes and phenotypes of children of a homozygous dominant parent and a heterozygous parent? a) Construct a Punnett Square - List gametes in the area with the dashed line and the genotypes of the offspring in the area with the sold line. b) Genotypes of Children-c) Phenotypes of children-
Question 1.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. B) The frequency of the "a" allele. C) frequency of the a allele, then the frequency is 60%. D) The frequency of the "A" allele. E) frequency of A is by definition equal to p, so the answer is 40%. F) The frequencies of the genotypes "AA" and "Aa." G)The frequencies of the two possible phenotypes if "A" is completely dominant over "a."
QUESTION 18 Describe: Population aging and increased longevity are creating more multi- and intergenerational families in the U.S. Give two examples of ways in which family structure and family roles are changing because of these changes.
QUESTION 30 Misconceptions (false-truths accepted by the general public) are a constant problem in terms of evolution education. Of the following statements, which one is actually TRUE? a. Natural selection only acts directly on phenotypes of individuals. b. Populations must evolve to avoid and prevent extinction of the species. c. Populations evolve to perfection such that all traits an individual has maximizes all aspects of fitness. d. A new trait cannot evolve within a population while undergoing selection favoring a different trait.
QUESTION 43 Which of the following statements is true about linkage disequilibrium? a. D= -0.21 indicates that two loci are in greater LD than D= 0.15 b. New alleles are born into a population in LE with the surrounding loci c. Divergent populations that experience a sudden large migratory event will be immediately in LE after mixing. d. Selective sweeps occur randomly along chromosomes as a result of LE and LD alternating at regular intervals.
Question 5 A rather large population of organisms have 396 red-sided individuals and 557 tan-sided individuals. Assume that red is totally recessive. Please calculate the following: a) The allele frequencies of each allele b) The expected genotype frequencies. c) The number of heterozygous individuals that you would predict to be in this population. d) The expected phenotype frequencies. e) Conditions happen to be really good this year for breeding and next year there are 1,245 offspring. Assuming that all of the Hardy-Weinberg conditions are met, how many of these would you expect to be red-sided and how many tan-sided?
Questions for Years since Separation:1) When genetic researchers compare the DNA of Northern Asian population versus NativeAmerican populations, they find a 0.07% difference. The “Mitochondrial Clock” formula tells usthat there has been about _____________ years since the separation of these two groups.2) When comparing the DNA of Northern Asians and European populations, they discovered a0.1% difference. The “Mitochondrial Clock” formula tells us that there has been about______________ years since the separation of these two groups.3) When comparing the DNA of Indonesian peoples to either the European group or the NorthernAsians, they find a 0.12% difference. The Mitochondrial Clock formula tells us that there hasbeen about _____________ years since the separation of these two groups.4) When researchers compare the DNA of African populations to any other group they find a 0.2%difference. The Mitochondrial Clock formula tells us that there has been about__________________ years since…