Final answer:
Crossing over occurs after meiosis to increase genetic variation among offspring in the same family.
Step-by-step explanation:
After meiosis, the process that occurs to increase genetic variation among offspring in the same family is crossing over. Crossing over is the exchange of genetic material between homologous chromosomes during prophase I of meiosis. This process results in the recombination of alleles and contributes to genetic diversity among offspring.
Learn more about Genetic variation in offspring