Question

based on the evolutionary tree seen here, what node represents the most recent common ancestor of organisms 1 and 3?
o node a
o node b
o node c
o node d

Explanation:

In an evolutionary tree, the most recent common - ancestor of two organisms is the node where their lineages diverge. For organisms 1 and 3, tracing their lineages back, we find that the most recent node they share is Node B.

Answer:

B. Node B