The phylogenetic tree below depicts the evolutionary relationships of the following species A through M.
Present
time
H
F
10 million
years ago
20 million
years ago
30 million
years ago
G
I
M
N
ED
.h.
K
B
Part 1: Use this image to describe the relationship between D, M, and K, including how closely they are related to each other, and determine the
most recent common ancestor for these species.
Part 2: Using the above image, estimate how long ago the common ancestor for D, M, and K lived.
Part 3: Of species D, M, and K, which have gone extinct without producing any evolutionary descendants? Provide evidence to support your
answer.
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