Question

question 8 of 10 which shows a correctly paired dna molecule? a. tct ga aga gc b. tct cg aga cg c. tct cg atg gc d. tct cg aga gc

Explanation:

In DNA, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G). Let's check each option:

• Option A: In the second part, GA (guanine - adenine) is wrong. G should pair with C.
• Option B: In the second part, CG - CG is wrong. The second strands should be complementary.
• Option C: In the first part, TCT - ATG is wrong. A should pair with T, but the third base T (in TCT) pairs with G (in ATG) which is incorrect.
• Option D:
• For the first part: TCT and AGA. T pairs with A, C pairs with G, T pairs with A.
• For the second part: CG and GC. C pairs with G, G pairs with C. This follows the base - pairing rules of DNA.

Answer:

D. TCT CG AGA GC