- Mendel demonstrated that heredity involved discrete, heritable factors that affected specific traits.
- A gene can be defined abstractly as a unit of inheritance.
- The ability of DNA from bacteria and viruses to transfer genetic information into bacteria demonstrated that DNA is the genetic material.
- DNA is a double helix made of two anti-parallel strands of bases on a sugar-phosphate backbone.
- Specific bases on opposite strands pair through hydrogen bonding, ensuring complementarity of the strands.
- The Central Dogma explains how DNA dictates heritable traits.
- Not all DNA in an organism contains genes.
- Model organisms accelerate the use of genetics in basic and applied research in biology, agriculture and medicine.
P, F1, F2
Avery, MacLeod, & McCarty
Hershey and Chase
Meselson & Stahl
heavy vs light
Beadle & Tatum
Watson and Crick
Contributors and Attributions
Dr. Todd Nickle and Isabelle Barrette-Ng (Mount Royal University) The content on this page is licensed under CC SA 3.0 licensing guidelines.