Answer:
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.