Figure 20.2
- Figure 20.4
Extrapolating backward in time using the molecular clock indicates that the HIV-1 M strain originated around

Question

Quizplus · Accepted Answer

By comparing the genetic differences between HIV-1 M strains, scientists were able to estimate the rate of HIV’s evolution and use it to extrapolate when the virus originated. Based on this molecular clock analysis, the most likely time of origin for the HIV-1 M strain is around 1930.

Figure 20.2 - Figure 20.4