Question

Which of the following strings is constructed using only characters 'a' and 'b'?

A) abababb
B) bbaaab
C) abccba
D) aabbba

Answer 1

The complementary DNA sequence to GCTTATAT is CGAATATA. This sequence follows the base-pairing rules where A pairs with T and G pairs with C.

Step-by-step explanation:

To determine which of the following sequences on a DNA molecule would be complementary to GCTTATAT, we need to understand the base pairing rules of DNA. Adenine (A) pairs with Thymine (T), and Guanine (G) pairs with Cytosine (C). Therefore, we must find a sequence where each nucleotide is the complementary base to the given sequence GCTTATAT.

• G pairs with C
• C pairs with G
• T pairs with A
• A pairs with T

A complementary sequence would therefore be:

1. G -> C
2. C -> G
3. T -> A
4. T -> A
5. A -> T
6. T -> A
7. A -> T
8. T -> A

The correct answer that follows this pattern is therefore option (c) CGAATATA.

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