🌱 Mendel's Genetics Simulation
Discover how traits are passed down and why some are dominant while others are recessive.
Step 1: Selection of Parents
Mendel selected pure-breeding pea plants with contrasting traits.
TT
Tall (Pure)
✖
tt
Dwarf (Pure)
Step 2: F1 Generation
The offspring of the pure parents. Observe the height.
Observation:
All offspring are Tall! Even though one parent was dwarf.
Conclusion: The Tall trait (T) is DOMINANT and the Dwarf trait (t) is RECESSIVE.
F1 Punnett Square
T
T
t
Tt
Tt
t
Tt
Tt
Step 3: F2 Generation
What happens when the F1 hybrids (Tt) self-pollinate?
F2 Punnett Square
T
t
T
TT
Tt
t
Tt
tt
Final Ratios:
- Phenotypic Ratio (Appearance): 3 Tall : 1 Dwarf
- Genotypic Ratio (Genes): 1 TT : 2 Tt : 1 tt
The recessive dwarf trait reappears because there is a 25% chance of getting 'tt'.