题目内容

Which of the following description about codon is NOT correct:()

A. There are 64 codons that can determine amino acids.
B. CTA cannot be a codon.
C. One amino acid can have one or more corresponding codons.
D. The same codon may responsible for the same amino acid in monkey cells and in human cells.

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If TAA in the direction of 3'to 5' become TAC in DNA template, the corresponding genetic code will become:()

A. from AUU to AUG
B. from UUA to UAC
C. from AUG to AUU
D. from UAA to UAC

Enhancer must be located upstream the target gene, but its effects are not related to its sequence direction.()

Both the enhancer and promoter are factors that promot transcription.()

Bacteria use only one RNA polymerase for transcription of all RNA in the cell, while eukaryotic cells have various RNA polymerases.()