Question

use the following dna strand to answer the questions
dna parent strand 1 t g g t a c g c a

1. which of the following is the dna parent strand 2?

a. a c c a t g c g t
b. a c c a u g c g u
c. u g g u a c g c a
d. t g g t a c g c a
e. none of the above

1. which would be the mrna transcribed from parent strand 1?

a. u g g u a c g c a
b. t g g t a c g c a
c. a c c a u g c g u
d. a c c a t g c g t
e. none of the above

Explanation:

Step1: Recall DNA - DNA base - pairing rules

In DNA, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G). Given DNA Parent Strand 1: T G G T A C G C A, the complementary strand (DNA Parent Strand 2) will have the bases: A C C A T G C G T.

Step2: Recall DNA - mRNA base - pairing rules

When transcribing DNA to mRNA, thymine (T) in DNA is replaced by uracil (U), adenine (A) pairs with uracil (U), cytosine (C) pairs with guanine (G), and guanine (G) pairs with cytosine (C). For DNA Parent Strand 1: T G G T A C G C A, the mRNA will be: U G G U A C G C A.

Answer:

1. a. A C C A T G C G T
2. a. U G G U A C G C A