2. DNA is in the form of double helix, with very speicfic ways in which the

nitrogenous bases pair. A (adenine) always pairs with T (thymine) and C
(cytosine) always pairs with G (guanine). mRNA however, does not contain
thymine. What base on the mRNA matches up with the adenine on the DNA
strand? (The video does not say this but shows it!) (1 point)

A (adenine)

U (uracil)

C (cytosine)

G (guanine)