BIOL 1001 : Study Guide Exam 3
Document Summary
During interphase a (1) cell grows, (2) replicates its dna, and (3) differentiates. Almost always grows in size and often differentiates. If signal says divide cell goes to s phase. Cell replicates its dna: more growth and synthesis of proteins that are necessary for the cell to divide, meiotic and mitotic cell division differences and similarities. Chiasmata form as a result of crossing over. Sister chromatids to opposite poles: mitosis conserves the number of chromosomes; meiosis reduces the number by half, meiosis creates genetic variation, meiosis is 2 successive nuclear divisions. Order of chromosomal events before and during mitosis. Cleavage furrow forms near the site of the metaphase plate (cell equator) At the cleavage furrow a contractile ring forms inside the plasma membrane and pinches the parent cell into two daughter cells. As the vesicles fuse, cell plate is forming a new cell wall.
