Evolution 2019 Practice Questions1.Five new species of bacteria were discovered in Antarctic ice core samples. The nucleotide (base)sequences of rRNA subunits were determined for the new species. The table below shows thenumber of nucleotide differences between the species.Which of the following phylogenetic trees is most consistent with the data?AAP BiologyNameCopyright © 2019. The College Board. These materials are part of a College Board program. Use or distribution of thesematerials online or in print beyond your school’s participation in the program is prohibited.Page 1 of 9
BCEvolution 2019 Practice QuestionsCopyright © 2019. The College Board. These materials are part of a College Board program. Use or distribution of thesematerials online or in print beyond your school’s participation in the program is prohibited.Page 2 of 9
DEvolution 2019 Practice QuestionsCopyright © 2019. The College Board. These materials are part of a College Board program. Use or distribution of thesematerials online or in print beyond your school’s participation in the program is prohibited.Page 3 of 9
2.In a hypothetical population of beetles, there is a wide variety of color, matching the range ofcoloration of the tree trunks on which the beetles hide from predators. The graphs below illustrate fourpossible changes to the beetle population as a result of a change in the environment due to pollutionthat darkened the tree trunks.Which of the following includes the most likely change in the coloration of the beetle population afterpollution and a correct rationale for the change?B
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