refer to the figure. what is the evolutionary distance between viruses a and d? 20 years 30 years 40 years…

refer to the figure. what is the evolutionary distance between viruses a and d? 20 years 30 years 40 years 60 years 80 years

refer to the figure. what is the evolutionary distance between viruses a and d? 20 years 30 years 40 years 60 years 80 years

Answer

Explanation:

Step1: Locate divergence point

Find the point where the lineages of Virus A and Virus D split. It is around 1980.

Step2: Determine time - points for each virus

Virus A and its closest common ancestor with Virus D diverged around 1980. Virus D also diverged from the common ancestor around 1980. The most recent time - point for Virus A and Virus D shown is around 2020.

Step3: Calculate evolutionary distance

The time from 1980 to 2020 is 40 years.

Answer:

40 years