EXAM 3 - Quiz Submissions Pre-exam Ch 18 Yang You(username xl9808ny Attempt 1 Written 9:25 PM 9:36 PM Submission View Your quiz has been submitted

EXAM 3 - Quiz Submissions Pre-exam Ch 18 Yang You(username...

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Quiz Submissions - Pre-exam Ch 18 Yang You (username: xl9808ny) Attempt 1 Written: Jun 22, 2016 9:25 PM - Jun 22, 2016 9:36 PM Submission View Your quiz has been submitted successfully. 0.5 / 0.5 points The myrtle warbler and the Audubon warbler were once considered distinct species. Recently the two species have been classified together as one species: the yellow-rumped warbler. Which of the following pieces of evidence is the cause for this reclassification? Question options: A)  The two forms live in similar habitats B)  The two forms have similar food requirements. C)  The two forms interbreed often in nature, and their offspring have good survival and reproduction D)  The two forms have many genes in common. E)  The two forms are very similar in coloration. 0.5 / 0.5 points Which of the following factors would NOT contribute to allopatric speciation? Question options: A)  The separated population is small and genetic drift occurs B)  A population becomes geographically isolated from the parent population. C)  Different mutations begin to distinguish the gene pools of the separated populations.
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D)  Gene flow between the two populations is extensive. E)  The isolated population is exposed to different selection pressures than the ancestral population. 0 / 0.5 points Plant species A has a diploid number of 12. Plant species B has a diploid number of 14. A cross between two plants is succesful, but the product, a hybrid, is infertile. What is the chromosome number of the hybrid? Question options: A)   13 B)  28 C)  14 D)  12 E)  24 The plant hybrid of the former question grows well for a long time and suddenly start to reproduce sexually. What process caused this hybrid to become fertile and what is the chromosome number of its new offspring? Question options: Nondisjunction in one chromosome pair during meiosis; 14 Nondisjunction of all chromosomes during meiosis in a few flowers; 26 Meisosis is not interrupted; 14
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Meiosis is not interrupted; 12 0.5 po According to the punctuated equilibrium model Question options: A)  natural selection is unimportant as a mechanism of evolution B) 
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