Biology, 04.04.2020 16:35 lilquongohard
A mutation that inserts or deletes one or two nucleotides is usually more harmful than a mutation that substitutes one base for another because -
A It changes one amino acid in the sequence of a protein
B it shifts the reading frame for the rest of the code causing many errors
C The codon consists of three nucleotides coding for an amino acid
D the chromosomes fail to separate resulting in trisomy 21
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