Ms. Curious is a biology graduate student. She is interested in a
transcriptional factor NobX. She conducted two experiments, and obtained the
following two sets of DNA fragments as potential binding sites of NobX,
respectively. As the results are so different, she suspected one experiment was
contaminated. Can you tell which one is more likely wrong? Why?
A:
TTACCTTAAG
GTTCCATAAC
TAACCTTGAC
TTACCTCAAC
TTAGATCAAC
B:
ACACAGGCAC
TGAACCGGAC
GATCCGGCGC
CACGGATCTC
ACACCGGTAC