The graph below shows the speed at which evolution occurs in a species of
butterfly.
Evolution
Time
3.1.1
3.1.2
3.1.3
Explain the trend in evolution represented by:
(a) Phase A
(b) Phase B
In view of the trend represented by A and B, what type of evolution
is represented by the graph?
Explain why the chances of speciation are great during phase B.