Q100 - Sequence Divergence, Substitution Counting, and Molecular Clock Assumptions
The analysis of DNA and protein sequences nowadays is widely used in constructing phylogenetic trees. Indicate if in the answer sheet each of the following statements is true or false.
Using the information and data, determine which of the statements are true or which are false.
A. The number of differences in a nucleotide sequence of two species increases with time that has passed since the species split from a common ancestor.
B. If the same protein of two related species are different at only one amino acid, then multiple substitutions might have occurred since the two species split.
C. rRNA sequence analysis is useful for phylogenetic relationship among species within a genus.
D. Pseudogenes can be used for constructing phylogenetic trees.
Question reproduced from IBO 2016, Theoretical Paper B, licensed under CC BY-NC-SA 4.0 - attributed to the International Biology Olympiad. Open the full exam PDF · Community solutions (unofficial)