Discover Questions

Newbie to biology here. Do autosomes develop before the gametes? I need help!!! For a maths question, I'm trying to figure out what 4 3/8 minus 2 11/12 is! thanks for helping!? Urgent geometry help? Two cards are drawn together from a pack of 52 cards. What is the probability that one is a club and one is a diamond? I heard a meteor is coming near earth in 2019. Does anyone know the date?