Teaching Tools

  • : Non-static method view::load() should not be called statically in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/views.module on line 823.
  • warning: Declaration of views_plugin_display::options_validate($form, &$form_state) should be compatible with views_plugin::options_validate(&$form, &$form_state) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/plugins/views_plugin_display.inc on line 0.
  • warning: Declaration of views_plugin_display_page::options_submit($form, &$form_state) should be compatible with views_plugin_display::options_submit(&$form, &$form_state) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/plugins/views_plugin_display_page.inc on line 0.
  • warning: Declaration of views_handler_argument::init(&$view, &$options) should be compatible with views_handler::init(&$view, $options) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/handlers/views_handler_argument.inc on line 0.
  • warning: Declaration of views_handler_argument_broken::ui_name() should be compatible with views_handler::ui_name($short = false) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/handlers/views_handler_argument.inc on line 0.
  • warning: Declaration of views_handler_sort_broken::ui_name() should be compatible with views_handler::ui_name($short = false) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/handlers/views_handler_sort.inc on line 0.
  • warning: Declaration of views_handler_filter::options_validate(&$form, &$form_state) should be compatible with views_handler::options_validate($form, &$form_state) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/handlers/views_handler_filter.inc on line 0.
  • warning: Declaration of views_handler_filter::options_submit(&$form, &$form_state) should be compatible with views_handler::options_submit($form, &$form_state) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/handlers/views_handler_filter.inc on line 0.
  • warning: Declaration of views_handler_filter_broken::ui_name() should be compatible with views_handler::ui_name($short = false) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/handlers/views_handler_filter.inc on line 0.
  • warning: Declaration of views_handler_filter_node_status::operator_form() should be compatible with views_handler_filter::operator_form(&$form, &$form_state) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/modules/node/views_handler_filter_node_status.inc on line 0.
  • : Non-static method view::load() should not be called statically in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/views.module on line 823.
  • warning: Declaration of views_plugin_row::options_validate($form, &$form_state) should be compatible with views_plugin::options_validate(&$form, &$form_state) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/plugins/views_plugin_row.inc on line 0.
  • warning: Declaration of views_plugin_row::options_submit($form, &$form_state) should be compatible with views_plugin::options_submit(&$form, &$form_state) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/plugins/views_plugin_row.inc on line 0.
  • warning: Declaration of views_plugin_style_default::options(&$options) should be compatible with views_object::options() in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/plugins/views_plugin_style_default.inc on line 0.
  • : Non-static method view::load() should not be called statically in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/views.module on line 823.
  • warning: Declaration of views_plugin_display_block::options_submit($form, &$form_state) should be compatible with views_plugin_display::options_submit(&$form, &$form_state) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/plugins/views_plugin_display_block.inc on line 0.
  • warning: Declaration of views_handler_field_broken::ui_name() should be compatible with views_handler::ui_name($short = false) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/handlers/views_handler_field.inc on line 0.
  • warning: Declaration of views_handler_filter_many_to_one::init(&$view, &$options) should be compatible with views_handler_filter::init(&$view, $options) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/handlers/views_handler_filter_many_to_one.inc on line 0.
  • warning: Declaration of views_handler_filter_term_node_tid::value_validate(&$form, &$form_state) should be compatible with views_handler_filter::value_validate($form, &$form_state) in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/modules/taxonomy/views_handler_filter_term_node_tid.inc on line 0.
  • : Non-static method view::load() should not be called statically in /home/dvdfos0/public_html/geneticssuite/sites/all/modules/views/views.module on line 823.

Tutorial: Chromosomes in meiosis

Meiosis comprises two successive divisions. During meiosis I the number of chromosomes is halved and recombination takes place. Recombination ensures that the gametes that are produced are genetically different. Meiosis II is essentially a mitotic division that is not preceded by replication of DNA.

 

Tutorial: Chromosomes in mitosis

The cell division process, mitosis, is responsible for multiplying cells and repairing damaged tissue. The chromosomes of a cell go through mitosis individually, producing two cells that are genetically identical with the same number of chromosomes as the cell that entered mitosis.

 

DNA: The mystery of simplicity

DNA is a winning formula for packaging genetic material. DNA in its simplicity is constructed by linking four different building blocks into a chain – a chain of four different nucleotides in different sequences. Two complementary chains combine with hydrogen bonds and form the well known double helix. 

Why is DNA a template?

A template is a tool that is used to guide a process. For example, a thin board or metal plate is used to guide cutting or drilling metal, stone, or wood, etc. DNA, as a template, means that the DNA is used as a guide to synthesize an exact copy of the DNA. In genetics we refer to the copying of DNA as replication. Replication of DNA happens during cell division – which it the process of cell multiplication. There are two types of cell divisions in multicellular organisms. They are mitosis and meiosis.

DNA: The spiral in the helix

DNA, our genetic material is a macromolecule that is long and linear that rolls up to have a spiral-like configuration. We refer to the spiral shape of DNA as a helix. In nature the DNA spiral comprises two strands arranged parallel to one another. The two strands are joined with hydrogen bonds. Taking this into account, we refer to a DNA molecule as a double helix. So, let’s consider the configuration of a DNA molecule without looking at the detail of the chemical components of DNA.