D the experiment where 2 populations of fruitflies

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D. The experiment where 2 populations of fruitflies raised on different food sources for many generations exhibited reproductive isolation when brought back together suggests that natural selection/adaptation can lead to reproductive isolation. E. None of the above (all these statements are FALSE). Mark for Review What's This? Part 6 of 7 - Speciation of Anoles Lizards Anoles lizards are the most species rich vertebrate genus on the planet, living throughout Central America and the Caribbean islands. Below is a phylogeny of the many different species of Anoles lizards found in the Greater Antilles comprising the 4 islands of Cuba, Hispaniola, Puerto Rico, and Jamaica. Each terminal tip in the tree represents a unique species classified into 6 possible types (Trunk-Ground, Crown-Giant, Twig, Grass-Bush, Trunk, Trunk-Crown), based on morphological/body characteristics and the habitat the species occupies within that island. So for example, the Trunk-Ground species are small brown lizards which live near the ground and the Crown-Giants are big lizards that live in the top of trees. This phylogeny is based on sequence analysis of a homologous gene present in all the species analyzed. Attachments
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4/12/13 6:34 PM 2013 Problem Set 2 on Evolution Lectures 4-6 Page 9 of 10 Question 1 of 2 4.0 Points Assuming this molecular phylogeny reflects the true evolutionary relationships among the different lizard species, which of these hypotheses on the evolutionary history of these species is reasonable? Pick ALL that apply: A. An ancestral lizard species residing on the mainland of Central America evolved into six different types of lizards (Twig, Grass-Bush, Trunk-Ground, Trunk, Trunk-Crown, Crown Giant), and these then dispersed from the mainland onto each of the four islands where they further evolved. Some species were lost due to extinction. B. Because all islands do not have the same number of species of lizards (for example, Jamaica has only four species and Cuba has six), we cannot compare these species and say anything about their evolutionary history. C. Lizard species that live on different islands but have the same body features and occupy the same type of habitat are more closely related to each other than lizard species that live on the same island but have different body features and habitats. D. Together with their common ancestors, the lizards on each island form a monophyletic clade. E. The phylogeny is consistent with the hypothesis that the lizards originally came from the mainland of Central America and on each of the islands, diversified and speciated to take advantage of available resources. This resulted in the independent evolution of morphologically identical characteristics on the four islands. Mark for Review What's This? Question 2 of 2 4.0 Points Taking into account the above phylogeny and assuming that each island can be viewed as a single, continuous location with no barriers preventing contact between lizards on a given island, which of the following statements are correct? Pick ALL that apply: A. The divergence of mainland species from the Greater Antilles species represents cases of allopatric speciation.
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D The experiment where 2 populations of fruitflies raised...

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