本题目来源于试卷: Unity and Diversity A.7 Classification and Cladistics，类别为 IB生物学
[单选题]
The table shows the *i r:tbopen.o (6s8( tiu9k vanumber of zxw+j ag62 nt+ differences in amino acid sequences for the Insulin-A pro +a6+nwz2x gtjtein, between pigs and other organisms.
Which organism would be furthest from pigs in a cladogram?
A. Warthogs because they have the least number of differences
B. Giraffes because they have the largest number of differences
C. Humans because they are most different physically
D. Flamingoes because they have a different number of limbs
参考答案: B
本题详细解析:
Organisms with the larla 86mbfypn5+j8t0j i gest differences in the amino acid sequence are the most evolutionarily diverged, so would be the furthest apart. Choice B is correct. Choice A is incorrect as warthogs and pim+ 6 b5l ij8njyf0apt8gs have the least number of differences so would be the closest organisms on a cladogram. Choices C and D are incorrect because cladograms are not based on physical appearance.
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