Gregor Mendel was a monk who published his work in 1866, but was not recognized for his accomplishments until 1900. His experiments pertained to the principles of heredity with pea plants plants. Pea plants were good choice in these experiments; because there were many characteristics that can be easily observed, they were only composed of two chromosomes, and they were able to self pollinate themselves. Also, they can be grown easily, and their reproduction can be altered. Sadly, most of his work has not regarded highly, unyill it was rediscovered in 1900. This information greatly aided geneticists in studying the concept of genes, and how they are inherited. His quantitative methods proved to be very helpful to the studies of inheritance.

His observations from the experiments with pea plants were summarized by the principle of segregation, and the law of independent assortment. The principle of segregation is when the pair of alleles for each parent separate and only one allele from each parent is given to the offspring. This is evident in sex cell formation. The law of independent assortment, states that different pairs of alleles are passed independently to the offspring. These observations were the beginning of modern genetics. However, there were many exceptions to some of his rules, which were eventually corrected throughout the years. Some exceptions to his principles were produced, from studying a wide variety of organisms. Gregor Mendel is still the pioneer in the foundations of the field of genetics, and derived the principles of inheritance.
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