Question

The following section of DNA is being transcribed.

G A C C T G A

Which of the following mRNA strands is complementary to the DNA strand?


A C G G C G T


C U C C T G U


C U G G A C U


C T G G A C T

Answer 1

The answer is C U G G A C U

Step-by-step explanation:

Because

G changes to C

A changes to U

C changes to G

T changes to A

see the picture please

Answer 2

C U G G A C U

Step-by-step explanation:

As you may already know, DNA and RNA are composed of nitrogenous bases that are complementary to each other. DNA is composed of the nitrogenous bases Adenine (A), Thymine (T), Guanine (G) and Cytosine (C), the mRNA is composed of the same nitrogenous bases, with the exception of Timine, which in the DNA is replaced by Uracila (U ).

The complementarity of these nitrogenous bases is established as follows: adenine is complementary to thymine (in DNA) and uracil (in RNA), cytosine is complementary to guanine.

The mRNA is formed from a DNA strand. During the process, RNA is formed with respect to the complementarity of the nitrogenous bases of DNA. In this case, if a DNA strand has the bases G A C C T G A, the mRNA will have the nitrogen bases C U G G A C U