Chapter 9: Introduction to Genetics: Mitosis and Cytokinesis
9.1 An Introduction to Genetics
The Central Dogma
The relationship between DNA and proteins is enshrined in the "Central Dogma" of biology. The Central Dogma of Biology (http://web.mit.edu/esgbio/www/dogma/dogma.html) from MITs hypertext explains the relationship between DNA and proteins and provides an overview of the basic features of the genetic code. It is linked to a more detailed description of the steps of protein synthesis. The Central Dogma of Molecular Biology (http://www.accessexcellence.org/AB/GG/central.html) from Genentechs Access Excellence site offers a series of hyperlinked diagrams explaining this key concept.
Keywords: central dogma
Primer on Molecular Genetics: Introduction
This page from the Department of Energys Primer on Molecular Genetics explains the relationship between DNA, genes, and chromosomes and includes a link to a human karyotype.
Keywords: DNA structure
9.2 An Introduction to Cell Division
Cell Division and Cancer
A nice overview of cell division, including its relationship to cancer, leads to a description of mitosis and cytokinesis.
Keywords: cancer, cell cycle
9.3 DNA Is Packaged in Chromosomes
The Cell Cycle & Mitosis Tutorial: DNA Basics
A brief overview of the relationship between DNA and chromosomes from The Biology Project.
Keywords: DNA structure
The Cell Cycle & Mitosis Tutorial: Cell Cycle
A good overview of the cell cycle from The Biology Project.
Keywords: cell cycle
9.4 Mitosis and Cytokinesis
This is an animated, interactive mitosis tutorial; it requires the Shockwave plugin, but is worth the effort.
The Biology Project
Start by reviewing mitosis at The Cell Cycle & Mitosis Tutorial: Mitosis (http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/cells3.html), then go to Online Onion Root Tips (http://www.biology.arizona.edu/cell_bio/activities/cell_cycle/cell_cycle.html), where you will identify stages of division in cells of an onion root tip to calculate the amount of time cells spend in each stage of the cell cycle (including the stages of mitosis).
Biology 102L Practice Problems
From the University of North Dakota, this page lets you quiz yourself with images of plant and animal cells as well as bead models of mitosis.
Cell Division Tutorials
From Cornell, this set of interactive tutorials and quizzes is a great resource that offers a detailed look at cell division generally and mitosis specifically.
9.5 Variations in Cell Division
Cell Division: Binary Fission and Mitosis
This page explains and illustrates the differences between eukaryotic and prokaryotic cell division.
Keywords: binary fission
Karyokinesis and Cytokinesis: Mitosis
A more detailed explanation of mitosis and cytokinesis in plants, accompanied by excellent microscope images.
Keywords: plant cytokinesis