classification

| December 8, 2015

The fruit fly Drosophila neotestacea carries a bacterial symbiont; the fly can also be infected by a nematode worm. Refer to the figure below showing the number of eggs produced by female flies that are or are not infected by the nematode, and that have or do not have the bacterial symbiont.

The bacterial symbiont:

xid-20710567_2
a.

reduces the fecundity of female flies infected by the nematode
b.

increases the fecundity of female flies infected by the nematode.
c.

increases the fecundity of female flies that are not infected by the nematode.
d.

increases the transmission of the nematode.

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Category: Biology

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