which of the following mutations would be most likely to have a harmful effect on an organism?

Question

there is not enough information

all mutations have a harmful effect on organisms

a substituion of a thymine for adenine

a deletion of 3 bases near the center of a gene

Answer 1

A deletion of 3 bases near the center of a gene would be most likely to have a harmful effect on an organism. This is because it can cause a frameshift mutation, which alters the reading frame of the gene and leads to a change in the amino acid sequence of the resulting protein.