Unity and Diversity A.7 Classification and Cladistics (id: cea90c1d2)

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 number of differences in7 d,cyqole j)(k xki6, amino acid sequences for t;dh .mw2ek7* ddnx2oohe Insulin-A prot2.x2w ;hnedkdom*o d7ein, 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 largest differences in the amino acid sequence are the m zo 6a;mqrwj5*ost evolutionarily diverged, so would be the furthest apart. Choice B is correct. Choice A is incorrect as warthogs and pigs have the least number of differences so would be the closew q;5rz 6a*jomst organisms on a cladogram. Choices C and D are incorrect because cladograms are not based on physical appearance.

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