What is the primary evolutionary significance of crossing over between non-sister chromatids of homologous chromosomes during prophase one of meiosis?

💡 Solution & Explanation

Crossing over allows the physical exchange of genetic material between non-sister chromatids during meiosis, resulting in recombinant chromosomes that generate immense genetic diversity among gametes and offspring. Equal chromosome distribution is achieved during anaphase segregation, while DNA repair mechanisms handle strand breaks independently. Genetic variation is a fundamental driver of natural selection and evolutionary adaptation in populations.