Question

1. what would happen to your sentence if you mutated or changed one letter of the dna code?

Explanation:

A single DNA base (letter) change is a point mutation. This can alter the corresponding mRNA codon, which may change the amino acid added during protein synthesis. Depending on the position and type of change: it could cause a missense mutation (different amino acid), a silent mutation (same amino acid due to code redundancy), or a nonsense mutation (premature stop codon). A missense mutation may alter protein structure/function, a nonsense mutation often truncates and inactivates the protein, and a silent mutation has no effect on the protein.

Answer:

Mutating one DNA "letter" (a point mutation) can have several outcomes:

1. Silent mutation: No change to the resulting protein, because the altered codon still codes for the same amino acid (due to the redundancy of the genetic code).
2. Missense mutation: The altered codon codes for a different amino acid, which may change the structure and function of the resulting protein (this change can be neutral, beneficial, or harmful).
3. Nonsense mutation: The altered codon becomes a premature stop codon, which truncates the protein early, often resulting in a nonfunctional or dysfunctional protein.