Here is an in class assignment. Can someone help me read the questions and find

Question

Here is an in class assignment. Can someone help me read the questions and find answers? Attached is the assignment. Homework - Biology 2010 Tree thinking exercise Recent analyses of genes called retroposons support the hypothesis that there is a monophyletic group of mammals that originated and diversified in Africa. The data that support this conclusion, and the resulting tree, are shown here. The numbers across the top of the table identify different retroposons; the 1s and Os for each species indicate that a particular retroposon is present (1) or absent (0). For each question, choose the single best answer. There are a total of 13 questions. Manatee elephant Hras srmp ./sster.gmo , ,nsect Elephant shrews 1-6 78 9-1213 Manatee 10 0 10 0 Elephant shrewI Question 1. Sister groups (or species) are each others' closest relative-meaning that they share a most-recent common ancestor. For example, manatees and hyrax are sister groups on this tree, and elephant shrews are a sister group to aardvark + tenrec. Based on the data given, when elephants are added to the tree they should be a sister group to Manatee r Hyrax Manatee+ hyrax Aardvark Tenrec Aardvark + tenrec Elephant shrew Aardvark + tenrec + elephant shrew veryone (manatee + hyrax +aardvark+ tenrec+ elephant shrew)

Explanation / Answer

1) manatee + hyrax

2) 1 to 6

3) Aardwark + tenred + elephant shrew

4) homoplasy - similarities between manatees and whales are due to similarities in genetic and development process.

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