Which of the Following Would Most Likely Involve Use of a Molecular

Multiple Choice

Which of the following would most likely involve use of a molecular clock?

A) Determining whether a doctor infected someone with his HIV-positive patient's blood
B) Determining when West Nile virus arrived in the United States
C) Determining whether female preference evolved before or after the male trait in a genus of birds
D) Reconstructing the ancestral states of proteins that code for an enzyme
E) Assessing the number of times self-incompatibility evolved in a family of plants