They must occur in the DNA, which is in each cells nucleus. More specifically the nucleolus of the cell. A mutation occurs in an allele, where a base triplet (or a codon) gets transcribed incorrectly.
This is (b.) False, because it was actually introduced in the 1930's.
Answer:
B 20 amino acids, hundreds of proteins
Explanation:
I hope this helped :)
D would be the correct answer
