Of the 59 matings in the experimental groups, how many were between like-adapted flies (flies ...

Part A
Of the 59 matings in the experimental groups, how many were between like-adapted flies (flies adapted to the same medium)?

a)17
b)22
c)30
d)42


part b
Which of the following statements is best supported by the data on matings in the experimental groups?

a) The starch-adapted flies and maltose-adapted flies appear to now be separate species as defined by the biological species concept.
b) The starch-adapted flies and maltose-adapted flies are not different species, but a reproductive barrier is forming between the populations.
c) There is no evidence of reproductive isolation between the starch-adapted flies and maltose-adapted flies.



part c


Which of the following statements is supported by the data from the control group matings?

a) Male starch-adapted flies were less likely to mate with female starch-adapted flies than with female maltose-adapted flies.
b) Female starch flies from population #2 were more likely to mate with male flies from their own population than with flies from a different starch population.
c) Flies were about as likely to mate with flies from different starch-adapted populations as with flies from their own starch-adapted population.



part d


A similar control experiment was performed with flies adapted to maltose, and similar results were obtained. What were these control experiments testing?

a) These control experiments tested whether in the process of becoming adapted to different food sources, the flies had lost the ability to reproduce.
b) These control experiments tested whether flies were more likely to choose mates from their own population than from another population adapted to the same medium.
c) These control experiments tested whether the starch-adapted flies had a greater preference for like-adapted flies than did the maltose-adapted flies.