The case of identical twins of different sex is extremely rare. The development of their gender starts 5 weeks after the moment of conceiving. A.True B.False Answer and Feedback Answer:B do you want? view more test Xem thêm Share this post Some other questions you may be interested in. I ....... be really mean to her, but I don't want to treat her like that. You ....... follow the law or you will go to jail. I ....... go to the wedding. I have to work on the same day. I really ....... be angry with him. It's not his fault. I ....... go to Hawaii this year. I've almost saved up enough money for the flight. She ....... speak for a moment. She was too emotional. Do you ....... to work on Sundays? I ....... to pay for this traffic ticket on time. It ....... rain tomorrow. The weather forecast doesn't look good right now. Let's go fishing tomorrow. Do you think you ....... come over at 5 am so we can get on the lake early in the*^*morning?*^*