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Question: as a result of their 4year study what did the...

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As a result of their 4-year study, what did the Grants learn about natural selection? Natural selection is observable and repeatable in a n atural enviro nment Natural selection can oscillate in direction Natural selection can occur when the environment changes Natural selection results in adaptive change All of the above QUESTION 8 For Questions 8-10, use the following definitions as background information to choose the best answers. Speciation: the evolutionary process through which a single species diverges to form new species Species concept: A paradigm (or way of thinking) that a biologist might use to determine whether or not two individual organisms belong to the same species or not Biological species concept: If individuals cannot mate or cannot produce viable offspring, then they should be considered to be different species Morphological species concept: If individuals have different phenotypes, then they should be considered to be different species Phylogenetic species concept: In brief, if individuals are genetically different enough from each other, then they should be considered to be different species Speciation is often considered to be complete when what occurs? Choose the best answer. Speciation is complete when the species no longer live together Speciation is complete when reproductive barriers are in place and the two species have little or no interbreeding, even when the species coexist again Speciation is complete once a biologists gives the species a new scientific name Speciation is complete when at least one allele is different between individuals Speciation is complete as soon as a single phenotypic trait variesQUESTION5 Why is Daphne Major such a good island for studying finch evolution? Its small size makes it easier to fully measure and grasp what the entire population is doing O O Because it is isolated and undisturbed, biologists can assume most of the evolution being observed is due to evolution occurring without human interference OIt has multiple resident populations of breeding finches with notable species diversity O All of the above O None of the above QUESTION6 What was found to be the driving force of change in the body size and beak shape of the finches studied by the Grants? Climactic change due to changes in temperature resulted in changes in their predators O Climactic change due to changes in temperature resulted in changes in the amount and type of seeds available to eat Increased ecotourism resulted in changes in the amount and type of seeds available to eat Climactic change due to changes in cyclical drought and wet years resulted in changes in the amount and type of seeds available to eat O Fires on the islands damaged the plants, and therefore, the amount and type of seeds available to eat

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