Question

If the first half of a DNA restriction site has the sequence AACC, what are the next four bases on the same chain?

Select one:
a. AACC
b. CCAA
c. GGTT
d. TTGG
e. GGAA

Answer 1

To answer this question, we need to know the specific restriction site being referred to. However, based solely on the information given, we can make an educated guess that the next four bases on the same chain might be the recognition sequence for the restriction enzyme that recognizes the AACC sequence.

One common restriction enzyme that recognizes a four-base sequence similar to AACC is EcoRI, which recognizes the sequence GAATTC. The complementary sequence for AACC is GGTT, so if the next four bases on the same chain are also part of the EcoRI recognition sequence, they would be GAAT.

However, without more information about the specific restriction site being referred to, we cannot be certain what the next four bases on the same chain are.