Question

The sequence of nitrogenous bases in mRNA is

A. identical to the template strand of DNA on which it forms.
B. complementary to the template strand of DNA on which it forms.
C. determined by the sequence of bases in tRNA
D. complementary to the sequence of bases found in the ribosome.

Answer 1

When mRNA is made, it makes a complementary copy to the template strand of DNA (so answer is B).

Making the mRNA is like making DNA except there is no T (thymine)...so when making the mRNA the rules are

DNA is A, mRNA is U

DNA is T, mRNA is A

DNA is G, mRNA is C

DNA is C, mRNA is G