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Ch. 24 - The Origin of Species
All textbooksCampbell 12th EditionCh. 24 - The Origin of SpeciesProblem 6
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Chapter 24, Problem 6

Plant species A has a diploid chromosome number of 12. Plant species B has a diploid number of 16. A new species, C, arises as an allopolyploid from A and B. The diploid number for species C would probably be a. 14. b. 16. c. 28. d. 56.

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Hello everyone here We have a question that says an AL employed plant Species C. Was created by two plant species A and B. If the deployed number of the unemployed Species C. Is 20 for what will be the deployed number of species A. And B. Respectfully the employed is the sum of our two deployed of our two individual species. So we're looking for something that adds up to 24. So a. equals 12. So it's not a. b. equals 48. So it's not b. c. equals 24. So that is correct. D. Equals 24. But it has an odd number. It has 11 and 13. So that is incorrect. We need even numbers because it's deployed. So our answer here is sea species a. equals 14 and species b equals 10. Thank you for watching. Bye.
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Textbook Question

According to the punctuated equilibria model, a. given enough time, most existing species will branch gradually into new species. b. most new species accumulate their unique features relatively rapidly as they come into existence, then change little for the rest of their duration as a species. c. most evolution occurs in sympatric populations. d. speciation is usually due to a single mutation.

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Textbook Question

Bird guides once listed the myrtle warbler and Audubon's warbler as distinct species. Recently, these birds have been classified as eastern and western forms of a single species, the yellow-rumped warbler. Which of the following pieces of evidence, if true, would be cause for this reclassification? a. The two forms interbreed often in nature, and their offspring survive and reproduce well. b. The two forms live in similar habitats and have similar food requirements. c. The two forms have many genes in common. d. The two forms are very similar in appearance.

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Textbook Question

Which of the following factors would be the most likely to contribute to allopatric speciation?


A. The separated population is large, and genetic drift occurs.

B. Selection pressures in the isolated population are similar to those in the ancestral population.

C. Gene flow between the two populations is extensive.

D. Different mutations begin to distinguish the gene pools of the separated populations.


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