Throughout the mid 1800s, an Austrian monk named Gregor Mendel
worked with pea plants to examine the effects of genetic crosses and heredity.
Throughout his experiments, Mendel examined the passing on of many characteristics in
pea plants, including height, pod color, pod shape, and pea shape.
Observing the results
of his crosses from generation to generation, Mendel found that, for one pair of alleles
being examined, “the visible appearance of F
is 3:1” (Bateson 58).
Upon further tests,
Mendel also found that, for two allelic pairs, “the visible appearance of F
However, Mendel’s work on heredity went largely unnoticed until the
work of three scientists, de Vries, Correns, and Tschermak, brought it once again to the
forefront. “Mendel is often referred to as the father of genetics because his work set the
foundation upon which modern biology, and especially genetics, is based” (Wellnitz).
Methods and Materials:
In this lab, my partner and I examined corn from Carolina
The first corn sample was guaranteed to have a ratio of 3:1, purple to
The second corn sample was supposed to have a 9:3:3:1, purple smooth
to purple wrinkled to yellow smooth to yellow wrinkled ratio.
We counted the kernels of
the two corn cobs to ensure these ratios are accurate.
On each cob, we found a row with