Bis 2c Study guides, Class notes & Summaries

BIS 2C Lab Practical Examhomology - Answer- characters present in organisms because they were inherited from a common ancestor homoplasy

Bacteria and Archaea are often collectively referred to as prokaryotes because they lack a nucleus (pro=before, karyon=nucleus). But, as you can see from figure 2.1, they are not each other’s closest relatives. Because bacteria and archaea are so diverse, they can be difficult to characterize. However, when compared to eukaryotes, they have significant differences in their general biology including, reproduction, organization of genetic material, and a lack of membrane-bound organelles. I...

BIS 2C Postlab 3: Body Form in Naegleria Across Environments (Graded A+)

homology - Answer- characters present in organisms because they were inherited from a common ancestor homoplasy - Answer- two structures with the same morphology, where this morphology was not inherited from a common ancestor (evolved multiple times independently) Conflict vs Congruence - Answer- whether or not new data correlates with the hypothesized phylogeny (congruence) or doesn't correlate with the hypothesized phylogeny (conflict) Cladograms - Answer- branch lengths are meaningl...

BIS 2C Postlab 7: Introduction to Metazoa (Graded A+)

This is a comprehensive and detailed note for Bis 2c taught by Prof Eisen, Moore And Ledford. Quality stuff!! U'll need it!!

Question 1. Based on figure 4.1, is it correct to state that we understand deep relationships among Eukaryotes? How do we represent ambiguity in branching pattern on phylogenetic trees? Hint: look at figure 1.27. No, we cannot say we understand deep relationships among Eukaryotes because there is a polytomy that represents ambiguity on the phylogenetic tree. No, you cannot define deep relationships amongst eukaryotes because the nodes include polytomies which signifies ambiguity/indefinite...

BIS 2C 002C Pre-lab 7 (QUESTIONS AND ANSWERS)

1. Based on what you learned in lab 1, and assuming the relationships shown in figure 2.1 are correct, do ‘prokaryotes’ form a monophyletic group? No 2. Based on figure 2.2, are the groups labeled “Archaea” monophyletic in the “two-domain” hypothesis? Yes 3. Bacillus anthracis - d Vibrio cholerae - f Chlamydia trachomatis - e Lokiarchaeota - c Yersinia pestis - b Thermus aq

BIS 2C Pre-Lab 7: Introduction to Metazoa (Graded A+)