For which of the following pairs is having nails most likely to be a homologous resemblance (one inherited from a shared ancestor) between the two? O a. Lemur and human O b. Tarsipes and human Oc. Tarsipes and baboon O d. Tarsipes and lemur O e. There is not enough information to say

You are studying the skeleton and bone morphology across reptiles. You find that in alligators a certain bone in the jaw has elongated whereas in a species of chameleon the bone has shortened in the jaw. In both species the bone still helps control feeding. Is this bone and skeletal morphology a homology?   a. Yes, it is a homology   b. No, it is not a homology   c. Not enough information to tell   d. The answer depends on the specific diet of each species

Cephalopods have complex eyes that arose separately from vertebrate eyes that are also used in vision. What's this an illustration of? A. Analogous structures B. Vestigial structures C. Homologous structures D. Missing links

1. For the skeleton characteristics, determine which of the two alternative trees you were assigned was the most parsimonious. Did the traits you chose to examine help make either of these trees more parsimonious than another? 2. Explain the evolutionary changes that happen on your most parsimonious tree.