Which DNA strand would complement this segment: ACTTGCA?

Rationale

TGAACGT is the complementary DNA strand for ACTTGCA.

In DNA, adenine pairs with thymine, and cytosine pairs with guanine. Therefore, to find the complementary strand for ACTTGCA, we must determine the corresponding bases for each nucleotide in the original strand.

A (TGAACGT) CORRECT

This option correctly represents the complementary strand. Each base in ACTTGCA pairs with its complementary base: A with T, C with G, T with A, G with C, C with G, and A with T. Thus, the sequence reads TGAACGT.

B (GACCATG) YOUR ANSWER

This choice does not match the base pairing rules of DNA. While it contains some correct bases, the sequence does not align correctly with the original strand ACTTGCA, failing to provide the necessary complementary pairs.

C (ACTTGCA) YOUR ANSWER

This option repeats the original DNA segment rather than providing a complementary strand. Since DNA strands are anti-parallel and complementary, this sequence does not fulfill the requirement of pairing with ACTTGCA.

D (None of the above) YOUR ANSWER

This choice suggests that none of the provided options are correct. However, since TGAACGT is indeed a valid complementary strand, this statement is incorrect.

Conclusion

The complementary DNA strand for ACTTGCA is TGAACGT, as it adheres to the base pairing rules of DNA. Recognizing the proper pairing is essential in molecular biology, particularly in processes like DNA replication and transcription, where accurate base pairing is crucial for genetic fidelity.

Which DNA strand would complement this segment: ACTTGCA?

TGAACGT is the complementary DNA strand for ACTTGCA.

Related Questions

Related Quizzes

How familiar were you with this question?

Report an Issue

Rate this Practice Test