You have discovered a new species of seal and are observing their behavior on a beach. You see groups of females affiliated with a single male. What data support the hypothesis that sexual selection played a role in the evolution of these behaviors?
A. Most of the offspring of a single group are
parented by the male that defends the group.
B. Male parentage is independent of group
affiliation—females mate with any male on
the beach.
C. Males spend a large amount of energy on
behavioral displays and fighting with other
males.
D. Females mate on the sly with different
males so the parentage of the offspring is
uncertain.
E. Males switch groups regularly and take
turns defending all of the females on the
beach from predators.
A
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