测试:SAT II Biology M

1.

The genetic underpinnings of a disease have recently been identified. This disease has been found to result from a single point mutation in the coding sequence of a gene. The normal coding sequence of this gene is 5' - GATTACG - 3'. Which of the following could be the disease-causing form of the gene?

5' - GATCACG - 3'

5' - GATGATACG - 3'

5' - GCATTAG - 3'

5' - GATTTACG - 3'

5' - CGTAATC - 3'

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