Importance of Cell Division

Scientific Advances in Cell Division

By: Dakota Neumann

Cell Division

Interphase

  • All cells start with interphase
  • Longest phase of cell division
  • G1- Gap 1: cell grows, prepares for DNA and chromosome(genes) replication
  • Synthesis- DNA is replicated, gives two exact copies of sister chromatids("one half" of the duplicated chromosome)
  • G2- Gap 2: Cells grow for division and organelles(organized/specialized structures in a cell) duplicate.

Mitosis

  • Somatic(living cell that is not reproductive)
  • Growth and Development
  • Repair

Early Prophase

  • First step after interphase
  • DNA and proteins(histones) condense and become visible
  • Chromosomes and centrioles(small cylinder organisms) begin to move apart
  • Nuclear envelope begins to disappear

Late Prophase

  • Centrioles are on opposite sides of the nucleus
  • Microtubules called spindle fibers begin to form
  • Chromosome are in homologous pairs
  • Nuclear envelope is gone

Metaphase

  • Homologous pairs held by a centromere
  • Kinetochore(centromere) allow spindle fibers to attach at the centromere
  • Spindle fibers push and pull the homologous pairs to the metaphase plate(middle)

Anaphase

  • Centromeres split and daughter chromosomes migrate to opposite ends of poles
  • centrioles and spindle fibers pull the daughter chromosomes towards the poles
  • Cytokinesis begins

What we have done with cell division

We have begun using electric waves to cause a cell to divide. We have learned that certain wavelengths can help promote cell division. We are also learning how to copy cells so that we can help promote growth of a organelles through the cell.