4 amino acids can be coded for by segment 5' ATCAGCGCTGGC 3'.
One codon is made up of 3 contagious nucleotides that code for one amino acid.
In the given sequence there are 4 sets of codons, therefore 4 amino acids are coded from the nucleotide sequence.
What is a genetic code?
- The genetic code, which is the arrangement of nucleotides in DNA and RNA and dictates the order of amino acids in proteins.
- Although DNA's linear nucleotide sequences carry the knowledge for protein sequences, proteins are not synthesized directly from DNA.
- Instead, the DNA is used to create a messenger RNA (mRNA) molecule, which then controls the formation of the protein.
- The four nucleotides that make up RNA are adenine (A), guanine (G), cytosine (C), and uracil (U).
Codon:
- A codon is a group of three contiguous nucleotides that codes for an amino acid.
- There are 64 distinct codons.
- Three of the codons signal the completion of a protein but do not code for amino acids. These are called stop codons which are: UAA, UAG, and UGA
- The 61 codons that remain describe the 20 amino acids that form proteins.
- Every mRNA begins with the AUG codon, which codes for the amino acid methionine and also signals the beginning of a protein. AUG is known as the start codon.
Learn more about the sequencing of codon here:
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