In meiosis, crossing over is initiated at

Options

(a) Pachytene
(b) Leptotene
(c) Zygotene
(d) Diplotene

Correct Answer:

Pachytene

Explanation:

Leptotene is Condensation of chromatin.Zygotene is Synapsis of homologous chromosomes.Pachytene is Crossing over.Diplotene is Dissolution of synaptonemal complex and appearance of chiasmata and Diakinesis is Terminalisation of chiasmata.