Question

What are the options for expanding the genetic code in vivo?

1) Addition of new codons
2) Incorporation of non-natural amino acids
3) Modification of existing codons
4) All of the above

Answer 1

The options for expanding the genetic code in vivo include the addition of new codons, incorporation of non-natural amino acids, and modification of existing codons.

Step-by-step explanation:

The options for expanding the genetic code in vivo include:

1. Addition of new codons
2. Incorporation of non-natural amino acids
3. Modification of existing codons

These options have been explored by researchers by adding new nucleotides or amino acids to the genetic code, creating new codons that can be recognized by engineered tRNA molecules. This allows for the incorporation of non-standard or non-natural amino acids into proteins. Additionally, existing codons can be modified to encode different amino acids. Overall, all of these options can be used to expand the genetic code in vivo.