BIOL 1201 Study Guide - S Phase, Cell Division, Chromosome
Document Summary
Cell division in prokaryotes: prokaryotes such as bacteria do not have a nucleus, prokaryotes divide into two identical new cells by the process of binary fission, binary fission is an asexual method of reproduction. Stages of mitosis: division of the nucleus or mitosis occurs first, mitosis is an asexual method of reproduction, mitosis consists of 4 stages --- prophase, metaphase, anaphase, & Cytokinesis: cytoplasm of the cell and its organelles separate into 2 new daughter cells. In animals, a groove called the cleavage furrow forms pinching the parent cell in two. In plants, a cell plate forms down the middle of the cell where the new cell wall will be. Interphase: cell matures & carries on normal activities, dna copied & appears as chromatin, nucleolus visible. Early prophase: chromosomes condense & become visible, centrioles separate & spindle starts forming. Late prophase: spindle forms with aster at each pole, nuclear membrane & nucleolusdisintegrate, centromere of chromosomes attaches to spindle fibers.
