Question

this model shows how rna nucleotides pair with dna nucleotides. according to the rules of complementary base pairing, which sequence of rna nucleotides would pair with the dna sequence tatga? options: utuct, tatga, auacu, atact, uauga, agtat

Explanation:

Step1: Recall base pairing rules

In RNA - DNA base pairing, adenine (A) in DNA pairs with uracil (U) in RNA, thymine (T) in DNA pairs with adenine (A) in RNA, guanine (G) in DNA pairs with cytosine (C) in RNA, and cytosine (C) in DNA pairs with guanine (G) in RNA.
The DNA sequence is TATGA. Let's break it down into individual bases: T, A, T, G, A.

Step2: Pair each base

• For the first base T (in DNA), it pairs with A (in RNA).
• For the second base A (in DNA), it pairs with U (in RNA).
• For the third base T (in DNA), it pairs with A (in RNA).
• For the fourth base G (in DNA), it pairs with C (in RNA).
• For the fifth base A (in DNA), it pairs with U (in RNA).

Putting these paired bases together, we get AUACU.

Answer:

AUACU