(4) What is the diffexence between a homologous structure and an Give an analogous tucture) example of each.

Each of the following three questions contains two lists. The first is a list of some characteristics of our own species, Homo sapiens, that distinguish it from LUCA. The second is a list of possible sequences (reading from left to right) in which these novelties were acquired by our ancestors during the course of human evolution. Choose the number of the correct sequence. If none is correct, choose "None of the above." Here is the first pair of lists: A. Bilateral symmetry B. Bony skeleton C. Mitochondria D. Notochord E. Multicellularity O D, E, B, A, C O C, E, A, D, B O E, C, A, D, B O A, E, C, D, B O None of the above

4) Repetitive DNA comprises about _________ of chromosomal DNA A) 5% B) 40% C) 60% D) 95%

1.) I have attempted to make connections between these topics throughout the semester: the idea of multicellularity, complexity, pattern formation, signaling, embryonic development and postembryonic development. Discuss these ideas from simple organisms, like Dicty or Volvox to more complex organisms like insects and vertebrates. How are these ideas similar and how are they connected through evolution? Use examples from class. (20 Points, limit to 1 page) 2.) Early in this semester I introduced you to the concept of the developmental biology tool kit. Throughout the semester we have built upon that tool kit. A sample of your tool kit includes gene expression, morphogens, scaffolds, time, endocrine, nervous system, cell division, electromagnetic fields, migration, and cell adhesion. Using examples from embryology, regeneration and post embryonic development discuss the aforementioned tools. (20 Points, limit to 1 page) 3.) This picture depicts one of Weismann's contributions to…