- Gregor Johann Mendel – Father of Modern Genetics.
- He studied approximately 29000 pea plants to demonstrate inheritance of traits following certain laws.
- For seven years, Mendel bred pea plants and recorded inheritance patterns in the offspring.
- He studied seven characteristics in the garden pea.
WHY A PEA PLANT
- Flower structure of pea plant ensured self pollination and also well defined male and female characteristics.
- Single season crop.
- Emasculation and pollination of pea plants is quiet easy.
- Reproduces sexually
- In varieties available , several characters has 2 contrasting forms which were easily distinguishable from each other
Mendel’s Plant Breeding Experiments
- Particulate Hypothesis of Inheritance
- Parents pass on to their offspring separate and distinct factors (today called genes) that are responsible for inherited traits
- Understood that there was something that carried traits from one generation to the next- “FACTOR”.
To test the particulate hypothesis, Mendel crossed true breeding plants that had two distinct and contrasting traits—for example, purple or white flowers.
What is meant by “true breeding?”