Homework2 answer

Homework2 answer - Name________________________ Bios 334...

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Unformatted text preview: Name________________________ Bios 334 Homework 2 2005, answers (in italics) You can use any reference materials you want, but remember that the goal is to be able to do these kinds of problems. You can work together, but try them first on your own. Full credit (20) will be given for turning in any reasonable attempt in time. Due Monday, Oct. 1, 10 AM. 1. The tree written on the left can be written in other equivalent forms, such as the one on the right. Show another equivalent form with taxa listed left-to-right as BDCA You need to maintain the same connections: DC first, then B, then A, as follows: B D C A 2. Suppose the five-taxon unrooted network below is the most parsimonious choice for species A, B, C, D and E. Show the three different rooted trees that would result if the outgroup F attaches at each of the three dots. A B C D A B D C A B C D E 1 2 3 Grab each root and drag it to the bottom, leaving the connections (nodes) as they are in the network. Each of the answers below could be written with the taxa in different orders, as long as the connections remain the same. 1 2 3 E A B C D E A B C D E A B C D 3. The table shows eight species of bird, along with descriptions of their plumage (bright, dull) and habitat (forest, prairie). Using that information alone (no phylogeny), evaluate the hypothesis that moving into the open prairie habitat causes birds to evolved dull plumage because it makes them less conspicuous to predators....
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This note was uploaded on 04/25/2008 for the course BIOS 334 taught by Professor Queller during the Spring '08 term at Rice.

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Homework2 answer - Name________________________ Bios 334...

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