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Biology for IGCSE & O level - Inheritance (Section 12 - No. 1)

What is a codon?
A three-base sequence on a tRNA molecule.
A three-base sequence on an mRNA molecule that codes for an amino acid.
A four-base sequence on a DNA molecule.
A sequence of amino acids in a protein.

توضيح

A codon is a three-base sequence on mRNA that specifies a particular amino acid or a stop signal.

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