QUESTION 1 All Native Americans are believed to be descended from a small group of individuals who crossed a land bridge that formerly connected Siberia to Alaska. The term used to describe genetic differences between the group that crossed over and the larger population they were formerly a part of is:

QUESTION 1 All Native Americans are believed to be descended from a small group of individuals who crossed a land bridge that formerly connected Siberia to Alaska. The term used to describe genetic differences between the group that crossed over and the larger population they were formerly a part of is:

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 16QP: Measuring Genetic Diversity in Human Populations How would a drastic reduction in a populations size...

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QUESTION 9 Recent genetic research indicates that ____ or more individuals are needed for an endangered species to maintain its capacity for biological evolution. a. 100 b. 1,000 c. 10 d. 100,000 e. 10,000
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 26 When thinking about changes in allele frequencies over time, why do you care more about the effective population size rather than the census (total number of individuals) population size?
QUESTION 22 Tiktaalik and Archaeopteryx are very important transitional forms. They provide evidence for evolution through examples of: a. microevolution b. macroevolution c. migration d. speciation
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 54 What is the expected inbreeding coefficient for an offspring that is the result of an inbreeding event between siblings? a. 0.25 b. 0.0625 c. 0.125 d. 0.5
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 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 17 The current rate of extinction is ____ , compared to the historical background extinction rate. a. almost 1,000 times lower b. slightly less c. about the same d. up to 1,000 times higher e. fluctuating wildly
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 31 You are examining a population that has recently been subject to artificial selection for larger filet size (body size) through selective breeding in a commercial fishery. The artificial selection took quite a few generations, but the researchers were eventually successful. Which of the following statements is most likely true? a. There is likely no correlation between parent and offspring filet size (body size). b. The population experiencing artificial selection always has higher fitness than wild populations. c. The offspring of the selected population will, on average, be larger than the wild populations. d. The filet size (body size) of the fish is most likely controlled by a single gene.
QUESTION 14 Darwin’s finches on the Galapagos Islands are a group of species of finches. One of the major features noted is the variation in beak depth. We spent some time talking about the variation in the ground finch population and how that changed overtime and how that change corresponded to changes in environmental conditions, which affected food item characteristics and abundance. The changes in beak depth over time is a result of… a. natural selection b. gene flow c. sexual selection d. artificial selection