Which option gives the correct cause-and-effect relationship for Variation and evolution, Variation: students must explain how a rare mutation producing a suitable new phenotype can lead to a relatively rapid change in a species.

The correct option is Correct cause and effect: Mitosis maintains chromosome number; meiosis halves chromosome number. This matches Variation because students must explain how a rare mutation producing a suitable new phenotype can lead to a relatively rapid change in a species.. It is the only option that keeps Mitosis vs meiosis separate and answers the approved learning objective in Variation.

The correct option is Correct cause and effect: Mitosis maintains chromosome number; meiosis halves chromosome number. This matches Variation because students must explain how a rare mutation producing a suitable new phenotype can lead to a relatively rapid change in a species.. Correct cause and effect: Mitosis maintains chromosome number; meiosis halves chromosome number. This matches Variation because students must explain how a rare mutation producing a suitable new phenotype can lead to a relatively rapid change in a species. is correct because Mitosis maintains chromosome number; meiosis halves chromosome number. The learning objective says students must explain how a rare mutation producing a suitable new phenotype can lead to a relatively rapid change in a species, so the answer must stay inside Variation. The alternative options are wrong because they either claiming meiosis is used for body growth., claiming mitosis produces gametes., or drift away from mitosis questions must focus on identical cells, growth, repair, asexual reproduction, or maintained chromosome number..