5. Which of the following evolutionary processes (leading to speciation) is based on random changes population gene frequencies, due to a sudden decline in population size, followed by a recovery? A. migration (1like the evolution of Galapagos Island finches from one South American finch species B. genetic drift (like the evolution of sinistral-coiling snails from dextral-coiling ancestral snails) C. mutation (like the evolution of a new strain of influenza virus from an old ancestral strain) D. natural selection (like the environmental selection of polar bears from ancestral brown bears) E. artificial selection (like the human-directed selection of friendly dogs from ancestral gray wolves)

5. Which of the following evolutionary processes (leading to speciation) is based on random changes population gene frequencies, due to a sudden decline in population size, followed by a recovery? A. migration (1like the evolution of Galapagos Island finches from one South American finch species B. genetic drift (like the evolution of sinistral-coiling snails from dextral-coiling ancestral snails) C. mutation (like the evolution of a new strain of influenza virus from an old ancestral strain) D. natural selection (like the environmental selection of polar bears from ancestral brown bears) E. artificial selection (like the human-directed selection of friendly dogs from ancestral gray wolves)

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

See similar textbooks

Similar questions

1. Which of the following group is the most common ancestor of humans and all other vertebrates? a. birds b.fishes c.amphibians d.reptiles 2. Which of the following is NOT a reason that scientists make transgenic organisms? a.To help plants tolerate harsh environments b.To produce human drugs c. To enhance global diversity of organisms d. To increase the human food supply
28
8. In human populations birth survival rates tend to increase towards children born with a more average birth weight. In terms of natural selection this is known as a. Disruptive Selection b. Directional Selection c. Stabalizing Selection d. Random Selection
7. In the course of human evolution, we can see in the fossil record a tendency towards increasingly large brains as this feature likely served as an adaptive advantage. In terms of natural selection this is known as a. Random Selection b. Stabalizing Selection c. Directional Selection d. Disruptive Selection
1. Which of the following species characteristics would not put them at risk of extinction? A. globally-distributed over most available habitats (like the Norway rat) B. limited dispersal abilities (like many European trees during the last ice-age) C. relatively low genetic diversity (like the cheetah in Northern Africa) D. relatively small population sizes (like the North American whooping crane) E. relatively large body mass (like most of the Cretaceous dinosaurs) 2. The greatest extinction in the fossil record, causing the extinction of about 52% of marine vertebrate families from that time period (as well as high numbers of terrestrial extinctions), is considered to be: A. the Ordovician/Silurian extinction B. the Devonian/Carboniferous extinction C. the Permian/Triassic extinction D. the Triassic/Jurassic extinction E. the Cretaceous/Tertiary extinction 3. The timing of the above extinction event is defined by which of the following boundaries? A. the beginning of the Paleozoic…
1. What is the term describing the process that occurs when a species evolves into a new species with a physical barrier separating populations? a adaptive radiation . geographic isolation b. coevolution c. Geographic isolation d. Mutation
24.
2. When new species formed because gene flow was blocked by a physical barrier, this is considered... Group of answer choices a.allopatric speciation b.polyploidy c.sympatric speciation
2. Application Sapiens existed on Earth for a relatively long time? Explain. Yes, 300,000 years in fact Prior to the discovery of A. ramidus, could such a species be considered to be a "missing link"? Explain. 3. How long would a timeline be (in kilometers) using a scale of 10 cm = 1,000 years? on Farth is characterized by the appearance of many new species and the e by the persistence of some forms that garliest
1. Is the evolution of more wolf-like traits in the stray dogs of Moscow an example of artificial or natural selection, or perhaps some of both? Why? 1. Over the past 150 years, some of the stray dogs have developed some unique interactions with humans. What do you predict will happen to the stray dogs and their human “acquaintances” over the next 100 years?
1. The English naturalist John Ray thought that an individual dog should be classified as a member of the dog species (what we would now refer to as Canis lupus familiaris) primarily because: A. its parents and its offspring have the characteristics of dogs B. it has four legs C. it has a dorsal nerve cord D. it is a mammal E. it has a carnivorous diet
2. Birds have evolved over the last 60-70 MY. To learn about their relatedness, we can use DNA sequences. Because DNA evolves at a relatively steady rate, gene sequences in two different organisms will accumulate sequence changes and become more different with time. The longer ago their common ancestor was, the more different their sequences will be. However, some genes are under more selection and so evolve slowly. Other genes are under less selection and so evolve quite quickly. Assuming that sites change linearly with time, we can calculate how many sites differ when comparing genes between different species. For simplicity we'll assume we are comparing 1000bp of sequence for each of these genes. Species compared Canary and olive finch Canary and house finch Canary and zebra finch Canary and robin Canary and chicken a. Why do the three genes differ in the number of variable sites between different species? Canary Olive finch House finch Zebra finch robin chicken Canary # of sites…