Which option gives the correct cause-and-effect relationship for Variation and evolution, Variation: students must describe how the genome and interaction with the environment influence phenotype.

The correct option is Correct cause and effect: Mitosis maintains chromosome number; meiosis halves chromosome number. This matches Variation because students must describe how the genome and interaction with the environment influence phenotype.. 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 describe how the genome and interaction with the environment influence phenotype.. Correct cause and effect: Mitosis maintains chromosome number; meiosis halves chromosome number. This matches Variation because students must describe how the genome and interaction with the environment influence phenotype. is correct because Mitosis maintains chromosome number; meiosis halves chromosome number. The learning objective says students must describe how the genome and interaction with the environment influence phenotype, 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..