1. Darwin used the phrase "descent with modification" to mean that a. New species descended from preexisting species, and species must be able to change over time. b. Organisms that descended from high elevations are modified as they acquire new traits c. All living things descended from a recent common ancestor on the Galapagos Islands d. Individuals modify their behavior to survive and then pass those modifications on to their descenda

1. Darwin used the phrase "descent with modification" to mean that a. New species descended from preexisting species, and species must be able to change over time. b. Organisms that descended from high elevations are modified as they acquire new traits c. All living things descended from a recent common ancestor on the Galapagos Islands d. Individuals modify their behavior to survive and then pass those modifications on to their descenda

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter11: Evolution And Its Processes

Section: Chapter Questions

Problem 20CTQ: Two species of fish had recently undergone sympatric speciation. The males of each species had a...

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3) A species of crayfish that lives in caves produces eyestalks like its above-ground relatives, but no eyes (unlike its above-ground relatives). Eyestalks in these cave-dwelling crayfish are an example of a. biogeographical evidence of evolution b. the law of succession c. convergent evolution d. a vestigial trait
Darwin’s finches are a noteworthy case study of evolution by natural selection because evidence suggests a. they are descendants of many different species that colonized the Galápagos. b. they radiated from a single species that colonized the Galápagos. c. they are more closely related to mainland species than to one another. d. None of the choices is correct.
The theory of evolution is most accurately described as Group of answer choices A. Nn opinion that some scientists hold about how life originated on Earth. B. An overarching explanation, supported by much evidence, for how populations change over time and new species arise from ancestral species. C. One possible explanation, among several scientific alternatives, about how species have come into existence. D. An educated guess about how species originate. E. An idea about how acquired characteristics are passed on to subsequent generations.
Medical advances now allow many people who suffer from genetic diseases to survive and reproduce. These advances: a. refute Darwins theory. b. support Lamarcks theory. c. disprove descent with modification. d. reduce the effects of natural selection. e. eliminate adaptive traits
Charles Darwin proposed that evolution could be explained by the differential reproductive success of organisms that resulted from their naturally occurring variation. Darwin called this process (a) coevolution (b) convergent evolution (c) natural selection (d) artificial selection (e) homoplasy
Which of the following ideas is not included in Darwins theory? a. All organisms that have ever existed arose through evolutionary modifications of ancestral species. b. The great variety of species alive today resulted from the diversification of ancestral species. c. Natural selection drives some evolutionary change. d. Natural selection preserves advantageous traits. e. Natural selection eliminates adaptive traits.
Aardvarks, anteaters, and pangolins are only distantly related but are similar in structure and form as a result of (a) homology (b) convergent evolution (c) biogeography (d) vestigial structures (e) artificial selection
Biologists believe that the overall similarities between marsupial mammals in Australia and placental mammals in North America were caused by: a. plate tectonics. b. dispersal. c. convergent evolution. d. homeotic genes. e. punctuated equilibria.
The wings of birds, the legs of pigs, and the flippers of dolphins provide examples of: a. vestigial structures. b. homologous structures. c. acquired characteristics. d. artificial selection. e. uniformitarianism.
In evolutionary trees, each node represents an __________. a. single lineage c. divergence b. extinction d. adaptive radiation.
The fossil record: a. provides direct and indirect evidence about life in the past. b. shoes that all morphological novelties arise rapidly. c. provides abundant data about rare species with local distributions. d. is equally good for all organisms that ever lived. e. provides no evidence about the physiology or behavior of ancient organisms.
Which of the following could be an example of microevolution? a. a slight change in a bird populations color due to a smallgenetic change in the population b. large differences between fossils found near the groundsurface and those found in deep rock layers c. the sudden disappearance of an entire genus d. the direct evolutionary link between living primates andhumans e. a flood that drowns all members of a population