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A DNA strand that has the bases CTA GGT, has a complimentary strand with the bases ________.

a
TCG AAC
b
AGC TTG
c
GAT CCA
d
GAU CCA

1 answer

To find the complementary DNA strand, you need to pair the bases according to the base pairing rules: Adenine (A) pairs with Thymine (T) and Cytosine (C) pairs with Guanine (G).

For the DNA strand CTA GGT:

  • C pairs with G
  • T pairs with A
  • A pairs with T
  • G pairs with C
  • G pairs with C
  • T pairs with A

So, the complementary strand is: GAT CCA.

Thus, the correct answer is c) GAT CCA.