In a Comparison of Two DNA Sequences Found in the Same

question 30

Multiple Choice

In a comparison of two DNA sequences found in the same location on homologous chromosomes, one of the homologs carries the sequence 5′-AACTACGA-3′, and the other homolog carries the sequence
5′-AACTTCGA-3′. Within a population, you discover that each of these sequences is common. Which of the following statements correctly describes theses sequences?

• A) They contain a SNP that may be useful for genetic mapping.
• B) They can identify a protein-coding region of a gene.
• C) They may cause disease.
• D) They may carry out RNA interference.

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