BIOL107 Chapter Notes - Chapter 2: Cytokinesis, Endoreduplication, Metaphase

• School: University of Alberta
• Department: Biology (Biological Sciences)
• Course: BIOL107
• Professor: Lesley Harrington

Document Summary

Chromosome: containers of genetic information; a complex made of dna + proteins. Core histones: protein molecules that act as spools around which dna is coiled twice. Nucleosome: bead on a string structure along with dna is wound. Histone h1: compacts dna strand and its nucleosome. Syanaptonemal proteins bind homologous chromosomes together along their length complex bivalent --. Two pieces together crossovers reductional division dividing the number of chromosomes from 2n to 1n equational division number of chromosomes per cell is unchanged, G1 phase gap 1, normal single chromosome growth phase. G2 phase before mitosis, not found in meiosis cells. Interphase all parts of cell cycle excluding cell meiosis/ mitosis. Sex chromosome two homologs that do not look alive; assign sexual traits to each other. 2. 1 chromatin is uncompressed, chromosome is compressed, dna is a genetic material that makes it up.