American geneticist Barbara McClintock, who challenged the prevailing theory that genes are stable elements of chromosomes with his discovery of "jumping genes", was born in date 102. McClintock studied inheritance in corn, examining patterns of color appearing in the nuclei and leaves.
in 1931, McClintock and a graduate student Harriet Creighton proved that the physical mixing of chromosomes could lead to the exchange of genetic material. In 1944, McClintock observed that certain genes cell hopped cell developed as a core. Four years later, she discovered that the controlled breaking of chromosomes was that allowed genes to move. When McClintock published the surprising discovery in 1950, the scientific community was skeptical, but in 1983 she received the Nobel Prize in physiology or medicine. His work was then used to explain the inheritance patterns that follow the rules of Mendel based on dominant and recessive characters. McClintock died in 1992.
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