Question

which statement is scientifically based?
mutations rarely occur.
all mutations are harmful.
some mutations can be contagious, like infections.
mutations are not passed from parent to offspring.

Explanation:

• Mutations are rare events in the DNA replication process. DNA repair mechanisms and the fidelity of DNA polymerase reduce the frequency of mutations.
• Not all mutations are harmful. Some can be neutral (have no effect) or beneficial (e.g., antibiotic - resistance mutations in bacteria).
• Mutations are changes in the DNA sequence of an organism's genome. They are not contagious like infections (which are caused by pathogens).
• Mutations in germ - line cells (cells that give rise to gametes) can be passed from parent to offspring.

Answer:

Mutations rarely occur.