Question

a mutation causes a sequence of dna that has the nucleotides ttg to be changed to tcg. the resulting protein has a different sequence of amino acids. which type of mutation is this?
missense
nonsense
silent
frameshift

Explanation:

A missense mutation occurs when a single - base substitution results in a codon that codes for a different amino acid. Here, the DNA nucleotide sequence changes from TTG to TCG, leading to a different amino - acid sequence in the resulting protein. A nonsense mutation creates a stop codon prematurely. A silent mutation does not change the amino - acid sequence despite a change in the DNA sequence. A frameshift mutation is caused by insertions or deletions that shift the reading frame of the genetic message.

Answer:

missense