Crossing over takes place during: 21:55 Biology Chapter 6 Crossing over takes place during: a) anaphase I of meiosis. b) prophase I of mitosis. c) prophase I of mitosis and meiosis. d) prophase I of meiosis. e) None of the above is correct. Answer: prophase I of meiosis. Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+