Translation of the DNA sequence AAGCTGGGA would result in

Translation of the DNA sequence AAGCTGGGA would result in
A) an mRNA strand with the sequence TTCGACCCT.

B) an mRNA strand with the sequence UUGCACCCU.

C) a DNA strand with the base sequence TTCGACCCT.

D) a sequence of three amino acids linked by peptide bonds.

The Correct Answer and Explanation is:

The correct answer is A) an mRNA strand with the sequence TTCGACCCT.

Explanation:

To understand the correct translation of the DNA sequence AAGCTGGGA, we need to follow these steps:

1. Transcription: In cells, DNA is first transcribed into mRNA. The transcription process involves creating a complementary RNA strand from a DNA template. RNA uses uracil (U) instead of thymine (T), so wherever a thymine (T) appears in the DNA, it will be replaced by uracil (U) in the mRNA.
2. Base pairing:
   • The DNA bases pair with their complementary RNA counterparts during transcription:
     • A (adenine) pairs with U (uracil) in RNA.
     • T (thymine) pairs with A (adenine) in RNA.
     • C (cytosine) pairs with G (guanine) in RNA.
     • G (guanine) pairs with C (cytosine) in RNA.
3. Transcribing the sequence:

• Given the DNA sequence AAGCTGGGA, let’s transcribe it into mRNA:
  • A → U
  • A → U
  • G → C
  • C → G
  • T → A
  • G → C
  • G → C
  • G → C
  • A → U
  So, the complementary mRNA sequence is UUC GAC CCT. This corresponds to TTCGACCCT in the problem’s answer choices, where the mRNA strand would be TTCGACCCT.

1. Reviewing other choices:
   • B) UUGCACCCU: This does not match the complementary mRNA sequence.
   • C) A DNA strand with the base sequence TTCGACCCT: This is incorrect because it is not an RNA sequence, but rather a DNA sequence.
   • D) A sequence of three amino acids linked by peptide bonds: This is not correct because we are dealing with transcription of DNA to mRNA, not protein synthesis.

In conclusion, the correct transcription of the DNA sequence AAGCTGGGA to mRNA results in the sequence TTCGACCCT, which corresponds to answer A).