9. The stage of prophase I wherein crossing over occurs is
(a) zygotene
(b) diplotene
(c) leptotene
(d) pechytene
10. Meiosis I is reductional division and meiosis II is equational division
because of
(a) separation of chromatids
(b) crossing over
(c) the disjunction of homologous chromosomes
(d) the pairing of homologous chromosomes​