Question

If the sequence of bases in DNA is ATTCGATG, the sequance of bases in the transcript is:

• A. UAAGCTAC
• B. UAACGUC
• C. TUUGCTUG
• D. UUUCCUUC

Answer 1

Answer:

A. UAAGCTAC

The sequence of bases in DNA is ATTCGATG.

During transcription, the DNA strand is used as a template to synthesize messenger RNA (mRNA) by base pairing:

• Adenine (A) in DNA pairs with Uracil (U) in RNA.

• Thymine (T) in DNA pairs with Adenine (A) in RNA.

• Cytosine (C) pairs with Guanine (G).

• Guanine (G) pairs with Cytosine (C).

Transcribing the sequence ATTCGATG from DNA to RNA:
A → U
T → A
T → A
C → G
G → C
A → U
T → A
G → C

So, the RNA sequence is: UAAGCUAC.