AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Transcribe the sequence of DNAATTCAGAGG
A
ATTCAGAGG
B
TAAGACTCC
C
UAAGUCUCC
D
UACGAUCGG
Explanation: 

Detailed explanation-1: -It involves copying a gene’s DNA sequence to make an RNA molecule. Transcription is performed by enzymes called RNA polymerases, which link nucleotides to form an RNA strand (using a DNA strand as a template). Transcription has three stages: initiation, elongation, and termination.

Detailed explanation-2: -The major steps of transcription are initiation, promoter clearance, elongation, and termination.

Detailed explanation-3: -The enzyme that converts DNA into mRNA is called RNA polymerase, which attaches to the DNA double helix as shown here. Once attached, RNA polymerase can unwind the helix and begin copying one of the DNA strands to form an mRNA transcript of the gene.

Detailed explanation-4: -The sequence for AACGTAACG in mRNA molecule synthesized after transcription from a DNA strand shall be UUGCAUUGC.

There is 1 question to complete.