Page 8 - Genetics_FULL

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True-Breeding Plants

For his experiments, Mendel used true-breeding plants, called purebreds. The offspring of
purebreds always had the same trait as the parent.
Purebred Parent O spring

P Generation Cross
Pgeneration
Mendel tracked a characteristic Pgeneration

over three generations.

First he crossed two purebreds
that had different forms of a
characteristic. This is called the
parental, or P generation.
short X tall

All the first generation (F1) F1
offspring looked the same,
displaying only one of the F1
parental forms.
tall tall

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