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 DNA sequence from the same section of DNA but fromkgkk xp; .-q. 3gjs*x2hz9qdt tkw ikw3 a43m6fr/s6s hwo different organisms is shown in mf kkias/3wrw64s h36the table below.
Which organisms are most likely to have diverged from each other most recently?
A. Sequence 1 is ATCGGGTCGCTTTCTCG; Sequence 2 is ATCCGGTCGCTTTGTCG
B. Sequence 1 is TCGCGCGTAAATCGATG;Sequence 2 is TCCCGCGTCAATCGTTA
C. Sequence 1 is ATCGGGTGTGTCATATG;Sequence 2 is ATCGCGTGTCTCATCTG
D. Sequence 1 is TGTCATCATCCCGTACTG;Sequence 2 is TGTCATCATCGGCATGAC
参考答案: A
本题详细解析:
Choice A is correct because nde(byok+,3 pfoh ;4 ithe two sequences have the smallest number of differences between them, only two, therefore they are the most closely related. Choices B, C and D are incorrect, as there are more than 2 differences between the two sequences, 4, 3 and 8, respectivel4p+;fey bdon(i , hk3oy.
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