BIOL3190 Lecture Notes - Lecture 6: Sister Chromatids, Prophase, Metaphase
Document Summary
If you have dad with abc and mom with abc. Due to crossing over, you may end with abc or abc or a combination. In metaphase 1 of meiosis 1, you will have chromosomes with multiple gene types. You end up with what you started with in g1. Ge(cid:374)erall(cid:455), (cid:455)ou"re i(cid:374) e(cid:454)iste(cid:374)(cid:272)e for (cid:1006) ho(cid:373)ologous (cid:272)hro(cid:373)oso(cid:373)es for ever(cid:455) o(cid:374)e (cid:455)ou have, completely unaware of each other. When homologous proteins align in meiosis 1, the way they are organized is random. In prophase, the chromosomes will form tetrads or bivalents. At metaphase 1, you will have chromosomes with mixed up sets of alleles. In mitosis, chromosomes never have a problem anymore. The offspring will have 47 chromosomes when the gibbon (44 chromosomes) and the siamang (50 chromosomes) mated and had a baby. Each parent donates half of its chromosomes to germ cell and they will join to form the baby.