24. Of the following meiotic events (A) formation of synaptonemal complex (B) crossing over (C) arrangements of chromosomes at the equatorial plate at Metaphase I (D) separation of chromatids at Anaphase II Which one(s) lead to variation? (1) (B) only (2) (B) and (C) (3) (A) and (D) (4) (B) and (D)

Meiotic events that create genetic variation: crossing over and metaphase I alignment

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