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People begin to make a lot of progress in developing new varities of plants.
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Austrian monk named Gregor Mendel developed a theory of heredity, or how characteristics or traits are transmitted from parents to offspring.
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Hugh de Vries and Carl Correns independently rediscoverd these laws of heredity.
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Artificial Insemination began being used in US. At that time, only fresh semen was used and could only be kept alive about 2 to 3 days.
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DNA