Question

question 11 of 25
what would be the strand of complementary dna produced by the strand of dna shown below?
atg cga
a. tac gct
b. uac gcu
c. atg cga
d. tuc gct

Explanation:

In DNA, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G). For the given strand ATG CGA:

• A (adenine) pairs with T (thymine).
• T (thymine) pairs with A (adenine).
• G (guanine) pairs with C (cytosine).
• C (cytosine) pairs with G (guanine).
• G (guanine) pairs with C (cytosine).
• A (adenine) pairs with T (thymine).

So the complementary strand is TAC GCT. Option B has U (uracil) which is in RNA, not DNA. Option C is the same as the original strand. Option D has U (uracil) which is incorrect for DNA.

Answer:

A. TAC GCT