. (07.07 HC)Darwin explored the Galapagos Islands and observed variations of certain species. Forexample, he saw that the mockingbirds on three different islands were distinct but stillsimilar to the mockingbirds found on the mainland. The level of diversity in anecosystem can be determined by the frequency of speciation and extinction. (8 points)a. Describe speciation and identify two possible prezygotic barriers of themockingbirds that contribute to speciation.b. If the mockingbirds became extinct, explain how this could lead to adaptiveradiation. Σ19. (07.05 MC)Which of the following best describes evidence from biochemistry that a geneticiststudying evolutionary relationships might use to determine that two species are notclosely related? (4 points)Each species has a different reproductive mechanism.One species has genetic material that contains different nucleotides.Similar gene sequences in each species code for different proteins.○ The two species have different numbers of chromosomes.

Detailed explanation: 1. Each species has a different reproductive mechanism: This relates to…

Answered: . (07.07 HC) Darwin explored the…

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,...

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Similar questions

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
Which of the following statements is false? a. Gradual speciation is most likely to occur in a large population that lives in a stable climate. b. Punctuated equilibrium is unlikely to occur in a large population that lives in a stable climate. c. Gradual speciation and punctuated equilibrium both result in the divergence of species. d. Gradual speciation is most likely to occur in a small population that experiences a rapid change in its environment.
Genetic drift and natural selection can both result in rapid evolution. However, O A. natural selection requires genetic drift to provide new variation in populations. O B. genetic drift works slowly in small populations. O C, only drift leads to adaptation. O D. both processes of evolution could be slowed by gene flow.
Try to outline a scenario explaining the evolution of the three species shown in panel g. Use migration, mutation, genetic drift, selection, reproductive isolation, gene flow, extinction, and many generations in your scenario. Based on your scenario, what are the components that are necessary in a population in order for it to split or diverge into two new daughter species from a single ancestor (the parent species)?
12. Alfred Russel Wallace and Charles Darwin argued that evolution by means of natural selection involves all of the following steps except: A. over time, the species will evolve as the more fit individuals replace the less fit individuals B. those individuals that are more fit will survive and reproduce in the greatest numbers C. all individuals within a species have equal chances to improve their fitness D. species can produce more offspring than the environment can sustain E. variation is present in all species
A. Genetic drift refers to a. change in the way the body functions as a result of stressors. b. changes in the DNA sequence, particularly in sex cells. c. random changes or accidents that reduce genetic variation in a population. B. All human cultures a. can be correlated with "races" in the past. b. are unchanging and eternal. c. can be ranked as "primitive" or "advanced". d. are integrated and complex. d. exchange of genes when outsiders migrate into an area.
Natural selection (a) leads to species being better adapted to their environment. (b) may lead to speciation if there is no gene ﬂow between populations. (c) may lead to genetic divergence among populations in differing environments. (d) all of the above (e) none of the above
Climate change and glacial advances during the Pleistocene ice age (2.6 million to 11,700 years ago) split the ranges of several North American bird species into western and eastern populations. The western and eastern populations eventually diverged into two species. What is this an example of? A. Allopatric speciation following dispersal B. Allopatric speciation via vicariance C. Sympatric speciation due to balancing selection D. Sympatric speciation via autopolyploidy E. Sympatric speciation via allopolyploidy
Which of the following is NOT a correct statement regarding the neutral-mutation explanation for the high levels of genetic variation? A. Most genetic variation observed is adaptively neutral. B. Natural selection plays a lesser role in maintaining genetic variation. C. When natural selection occurs it leads to a decrease in genetic variation. D. Genetic variation is maintained mainly via the random effects of genetic drift.
The Galapagos archipelago consists of volcanic islands that formed within the last 5 million years. Darwin wrote of the finches on these islands, "...from an original paucity of birds in this archipelago, one species has been taken and modified for different ends." The Galapagos finches are an example of adaptive radiation driven by a. behavioural innovation. b. morphological innovation. c. ecological opportunity. d. physiological innovation.
A. Explain which force of evolution is seen here by a hybrid bird landing on an island that is not its home and breeding with the indigenous population. B. Explain which force of evolution randomly chooses an individual from a larger gene pool to form a new, smaller population with less genetic variety.

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