Which of these is the most widely supported explanation for the small body size and
mixture of primitive and derived traits of Homo floresiensis?
a. H. floresiensis is a result of evolutionary dwarfism.
b. H. floresiensis had microcephaly.
c. H. floresiensis had an ancestor older than Homo erectus.
d. H. floresiensis is a hoax.
After a drought, a scientist collects dead birds and finds that most of the individuals that
did not survive to adulthood have either small or large beaks. Given this pattern, how
would you expect selection to act on the population?
a. Selection will not change the mean beak size.
b. Selection will make the mean beak size in the population smaller.
c. Selection will make the mean beak size in the population larger.
d. The entire population will die out.