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L111-Quiz2a-ans - Indiana University Bloomington Evaluation...

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Indiana University Bloomington Evaluation Services and Testing QuizSite Students Quizzes · Tests · Evaluations · Surveys Activity Results: PracQ2a Student: shengeve (Susan Instructor: shengeve Course: L111 Section: 1142 Question 1. Two species of frogs belong to the same genus occasionally mate, but the offspring do not complete development. This is an example of ______. a. the postzygotic barrier called hybrid inviability b. the postzygotic barrier called hybrid breakdown c. the prezygotic barrier called hybrid sterility d. gametic isolation e. adaptation Your answer - a. the postzygotic barrier called hybrid inviability - is correct! (1 / 1) Question 2. In the frog genus, Rana, the embryos of hybrids are usually inviable, and therefore there should be ______. from occurring in the first place offspring the impact of the hybrid inviability Your answer - b. strong selection for a prezygotic mechanism to prevent mating between species from occurring in the first place - is correct! (2 / 2)
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Question 3. A biologist discovers two populations of wolf spiders whose members appear identical. Members of one population are found in the leaf litter deep within the woods. Members of the other population are found in the grass at the edge of the woods. The biologist decides to designate the members of the two populations as two separate species. Which species concept is this biologist most closely utilizing? Your answer - a. ecological - is correct! (3 / 3)
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