- Mendel first crossed
true-breeding
(homozygous) purple
with true-breeding
(homozygous) white
plants.
- All offspring show purple
flowers.
- Inheritance of the dominant phenotype
is explained by separation
of alleles during meiosis.
- Mendel then crossed the
purple
offspring.
- About 1/4 of the next generation reverted to white
flowers.
