How do sexually reproducing organisms produce gametes from diploid progenitors?

Through meiosis, diploid parents produce haploid cells called gametes. The gametes, through sexual reproduction, then meet and join into one cell called a zygote that is diploid.
The zygote then develops into a diploid organism with genetic traits from both parents.

D.) domain, kingdom, phylum, class, order, family, genus, species

You need to give use the answers