BI110 Study Guide - Spindle Apparatus, Sister Chromatids, Wound Healing
Document Summary
Cell growth and division: all cells originate from pre-existing cells through the process of cell division. Growing new tissues (e. g: new leaves during plant development) Replacement of lost cells (lining of gut) and/or damaged cells (wound repair) Binary fission (division in half: prokaryotic cells undergo a cycle of binary fission involving coordinated cytoplasmic growth, dna replication, and cell division, producing two daughter cells from an original parent cell. Cell has to get bigger (needs more components of cell membrane and organelles). Dna is then replicated (will have 2 identical daughter cells) Cell is then divides into two equal parts, producing two daughter cells from one parent cell. Mitosis and binary fission: believed that the ancestral division process was binary fission, and that mitosis evolved from that process, variations in mitotic apparatus in modern-day organisms show possible intermediates in evolutionary pathway.
