Question

what causes genetic diversity during meiosis?
the fact that chromosomes can align independently in any order
the fact that homologous chromosomes in a tetrad exchange genetic info
all of the above
the fact that gametes from two different people combine to make a zygote

Explanation:

• Independent assortment (chromosomes can align independently in any order) contributes to genetic diversity as it leads to different combinations of chromosomes in gametes.
• Crossing - over (homologous chromosomes in a tetrad exchange genetic info) creates new combinations of alleles on chromosomes.
• While the combination of gametes from two different people (the last option) is related to sexual reproduction and genetic diversity, it is not a process that occurs during meiosis itself. The first two options are processes within meiosis. And since "All of the above" includes the first two correct meiotic processes.

Answer:

All of the above