Molecule 1 has the nitrogenous base sequence TCAAGT. Which set of bases in molecule 2 can bond to that sequence in a complementary way?
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The right answer is AGUUCA.
Molecule 1 represents DNA and molecule 2 represents mRNA.
An mRNA molecule is made (thanks to RNA polymerase) according to the complementary code (with the exception that U replaces the T) of the transcribed DNA strand (template or antisense strand).
A is in front of the U
T is in front of the A
G is opposite of C (or vice versa)