What processes in meiosis increase the variability of organisms?

In meiosis, the variability of organisms increases the independent divergence of chromosomes in the first division, crossing over and a random combination during fertilization. Also, the increase in variability can be attributed to the conjugation of chromosomes, when the chromosomes accurately and closely converge.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.