BIO207H5 Lecture Notes - Lecture 5: Dna Replication, G1 Phase, Centriole
Document Summary
Once a cell undergoes meitosis produces 2 daughter cells identical to the parent. Occurs in somatic cells (no reproductive cells (cid:272)ells that do(cid:374)"t produ(cid:272)e ga(cid:373)etes) Usually w/ chromosomes present in pairs (2n) for each chromosome it has a homolog. Start with 2n cell, fin with 2 daughter cells who have 2n chromosomes. Start w/ 1 diploid cells end w/ 2 diploid cells role to produce gametes. Starts from specialized cells which are diploid (germ-line cells), meiosis happens and we end up with haploids. Germ-line cells are precursor cells that are diploids that undergo meisos (??) Ploidy is # of chromosome set found in a cell. (cid:272)hro(cid:373)oso(cid:373)e is a dou(cid:271)le heli(cid:454) 3"-5" a(cid:374)d 5"-3". Diploid organisms means they get a homolog. Homolog has the same traits, just the allels are different. Set 1 chromosome homolog for each so it becomes a second set. Homolog are diff and similar to the chromosome bc they contain info for the same stuff.
