Gregor Mendel | July 20 7月20日：孟德尔诞辰
Austrian friar and scientist Gregor Mendel, whose work with genetics was not truly appreciated until after his death, would have turned 189.奥地利遗传学家兼修道士身份的格里哥·孟德尔，一生致力于遗传学研究，但在生前他的成就却几乎无人能识。7月20日是孟德尔诞辰189周年。
