When we see chiasmata under a microscope, that lets us know which of the following has occurred?
a) asexual reproduction
b) meiosis ii
c) anaphase ii
d) prophase i
e) separation of homologs

When we see chiasmata under a microscope, that lets us know that prophase I has occurred. During this phase of meiosis, the nuclear envelope breaks up and disappears, and so does nucleolus. The chromosomes become visible at this point.

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