who was gregor mendel and what did he contribute to science?
Mendelian inheritance
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 Mendel 's work went largely unnoticed after its first publication in 1866 , but was rediscovered in the late 19th @-@ century by Hugo de Vries , Carl Correns , and Erich von Tschermak , who ( claimed to have ) reached similar conclusions in their own research . Specifically , in 1889 , Hugo de Vries published his book Intracellular Pangenesis , in which he postulated that different characters have individual hereditary carriers and that inheritance of specific traits in organisms comes in particles . De Vries called these units " pangenes " ( Pangens in German ) , after Darwin 's 1868 pangenesis theory . 

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 Scientists looking back on the Avery – MacLeod – McCarty experiment have disagreed about just how influential it was in the 1940s and early 1950s . Gunther Stent suggested that it was largely ignored , and only celebrated afterwards — similarly to Gregor Mendel 's work decades before the rise of genetics . Others , such as Joshua Lederberg and Leslie C. Dunn , attest to its early significance and cite the experiment as the beginning of molecular genetics . 

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 Einstein was a figurehead leader in helping establish the Hebrew University of Jerusalem , which opened in 1925 , and was among its first Board of Governors . Earlier , in 1921 , he was asked by the biochemist and president of the World Zionist Organization , Chaim Weizmann , to help raise funds for the planned university . He also submitted various suggestions as to its initial programs . 

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 The father of genetics is Gregor Mendel , a late 19th @-@ century scientist and Augustinian friar . Mendel studied ' trait inheritance ' , patterns in the way traits were handed down from parents to offspring . He observed that organisms ( pea plants ) inherit traits by way of discrete " units of inheritance " . This term , still used today , is a somewhat ambiguous definition of what is referred to as a gene . 

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 Other scientists for whom Whitehead 's work has been influential include physical chemist Ilya Prigogine , biologist Conrad Hal Waddington , and geneticists Charles Birch and Sewall Wright . 
