Passage VII
The male-to-female body mass ratio (MFMR) of a species can be calculated as follows:
MFMR = Mm ÷ Fm
In this equation, Mm is the average body mass of adult males and Fm is the average body mass of adult females.
The figure shows the MFMR of some species within 4 primate groups: apes and humans; Old World monkeys; New World monkeys; and prosimians. A species with an MFMR of 1 is monomorphic with respect to body mass. A species with an MFMR different than 1 is dimorphic with respect to body mass. (Note: In the figure, MFMR values are calculated to the nearest tenth.)
39. On average, which of the following types of apes shown in the figure has the greatest MFMR?
Your Answer is
Correct Answer is D
Explanation
Look at the picture in the upper left corner, where the largest MFMR is Go (gorillas)