Different cells within the human body exhibiting different patterns of gene expression.
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-Payshence xoxo
Answer:
Early geneticists wondered how only four nucleotides can specify the sequence of 20 amino acids in proteins. They hypothesized that there must be a code that linked the nucleotide sequence in a gene to the amino acid sequence in a protein. Each nucleotide code is called a codon. Today we know that there is a genetic code in which __________nucleotide(s) code(s) for each amino acid.
3
4
1
2
Explanation:
3 is the answer. 43 or 64 is the number of possible 3-letter codes that can be formed.
more than one codon can codes for the same amino acid
Aa, gg and aa are homozygous.
ag and ag are heterozygous.
Your answer would be 0 to 4 percent.
