Question

which statement best describes how mutations are related to evolution? a there is not a strong relationship between mutations and evolution. b natural selection causes evolution, which causes more mutations to appear in the dna of the species. c mutations are changes in dna that produce weaker organisms that die, so these are eliminated by evolution. d mutations lead to new genes, which may have an advantage over the old forms, causing the species to evolve.

Explanation:

Mutations create genetic variation (new genes/traits). Advantageous mutations are favored by natural selection, leading to species evolution. Option D correctly describes this causal link: mutations → new genes → potential advantage → evolution. Other options are incorrect (A denies the relationship; B reverses causation; C only addresses harmful mutations, not the role of beneficial ones in evolution).

Answer:

D. Mutations lead to new genes, which may have an advantage over the old forms, causing the species to evolve.