genetic info, variation, relationship between organisms

• what is a feature of DNA and how is it important in the semi-conservative replication of DNA?

  DNA is a double strand. therefore both strands can act as templates
• what is a feature of DNA and how is it important in the semi-conservative replication of DNA?

  DNA has weak hydrogen bonds between bases. this therefore allows the two strands to separate/ unzip
• when asked to draw and label a single DNA nucleotide what are the 3 things you must include?

  • phosphate (circle)
  • pentose sugar - ribose or deoxyribose (pentagon)
  • nitrogenous base (rectangle)
• why is DNA helicase important in DNA replication?

  DNA helicase breaks the hydrogen bonds linking the base pairs of DNA