Mendel's First Law

Gregor Mendel (1822-1884)

ALLELES

Pisum sativum

The Pea Flower

Pea Flower Sex Organs

Pea Flower Fertilization

Pea Pod with Seeds

Initial Crosses

Dominant and Recessive

F1 x F1 - Selfcross

Next - - Selfcross Individual F2's

Binomial Expansion (math)

Mendel's FIRST LAW

Two Important Terms

P1 cross diagram

First Experiment - - Selfcross

F1 Selfcross diagram

Second Experiment - - Testcross

F1 testcross diagram

Results of Testcross

Reciprocal of first Testcross

Equal Parental Contributions

Mendel's Monohybrid Results

Mendel's FIRST LAW