Question

Use the DNA sequence below to answer the question that

follows.
5' AC ATC GA C G C G C G C A 3
What is the complimentary DNA strand that would result
during replication?
O 3' U GUA GCU G C G C G C G U5'
O 3A CA TOGA OG O G C G C A5
O'A CA U CGA C G C G C G C A51
03 TGTAGTG C G C G C G T5

Answer 1

D) 3' TGTAGTGCGCGCGT 5'

Step-by-step explanation:

DNA strand: 5' ACATCGACGCGCGCA 3'

compliment: 3' TGTAGCTG CGCGCGT 5'

DNA strands are antiparallel which means that if you're given a 3' to 5' strand, the complementary DNA strand will be 5' to 3'. If you are given a 5' to 3' strand, the complementary strand will be from 3' to 5'.

The other thing to remember for DNA complementary strands only is:

- A always pairs with T

- G always pairs with C

(for DNA only!!!!) This is one of Chargaff's principles.

If you're asked to find the RNA sequence, A pairs with U. not T! Thymine does not apply to RNA. G still pairs with C though.