what are the features of genetic code?
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1. The codon is a triplet.
2. There are 64 codons of which only 61 are coding and 3 act as stop codons and do not code for any amino acid.
3. One codon codes for only 1 amino acid. Thus, it is unambiguous and specific.
4. A single amino acid may be coded by more than one codon. Thus, it is degenerate.
5. A codon is universal i.e., from bacteria to human beings, UUU codes for phenylalanine (phe). However exceptions have been found in some mitochondria and protozoans.
6. A codon in mRNA is read in a contiguous fashion i.e., without any punctuation.
7. The codon AUG has dual functions. It codes for Methionine (Met) as well as acts as the initiator codon.
2. There are 64 codons of which only 61 are coding and 3 act as stop codons and do not code for any amino acid.
3. One codon codes for only 1 amino acid. Thus, it is unambiguous and specific.
4. A single amino acid may be coded by more than one codon. Thus, it is degenerate.
5. A codon is universal i.e., from bacteria to human beings, UUU codes for phenylalanine (phe). However exceptions have been found in some mitochondria and protozoans.
6. A codon in mRNA is read in a contiguous fashion i.e., without any punctuation.
7. The codon AUG has dual functions. It codes for Methionine (Met) as well as acts as the initiator codon.
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Answer:
- degenerate
- universal
- triplet nature
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