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Gregor Mendel

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Nikki Nelson

on 22 April 2010

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Transcript of Gregor Mendel

GREGOR MENDEL EARLY LIFE Gregor Mendel was an Austrian botanist, teacher, and prelate original name Johann Mendel
Born: July 22, 1822
Death: January 4, 1844
by Nikki Nelson
Period 6
Mr. Sack
April 19, 2010 Expirement Aftermath Citations "Gregor Mendel Quotes." Brainy Quote. 2010. 19, April, 2010. <http://www.brainyquote.com>
Quotes
"My scientific studies have afforded me great gratification; and I am convinced that it will not be long before the whole world acknowledges the results of my work. "
"The value and utility of any experiment are determined by the fitness of the material to the purpose for which it is used, and thus in the case before us it cannot be immaterial what plants are subjected to experiment and in what manner such experiment is conducted. " Olby, Robert. "Mendel, Gregor." Britannica Biographies. 1994-2008. Student Research Center. EBSCOhost. David R. LaRock Library. Richfield, MN. 19 April, 2010. <http://web.ebscohost.com>
"Gregor Johann Mendel." DISCovering Biography. 2003. Discovering Collection. GALE CENGAGE Learning. David R. LaRock Library. Richfield ,MN. 19 April 2010. <http://find.galegroup.com>
http://history.nih.gov/exhibits/nirenberg/popup_htm/01_mendel.htm
Secko, David. "A Monk's Flourishing Garden: The Basics of Molecular Biology Explained." The Science Creative Quarterly. 2009. 19 April 2010. <http://www.scq.ubc.ca >
Gregor Mendel was the first to discover
the first laws of heredity. Was not credited with the findings until after death Most people were not sure what to think of Mendel and his experiments. Most didn't believe him because he was not an offical scientist In the 1900s Mendel was finally given credit for his work.
Raised in the country
sent to school at age 11 Had to return home due to financial difficulties Entered the monastery, was given the name Gregor. Was an intellectual and diverse community. First to lay the mathematical foundation of the science of genetics
Now called Mendelism.
Mendel thus founded genetics
From his experiments, he was able to conclude that traits were not necessarily blended or mixed but instead inherited. Sometimes the trait can be carried and not expressed Was put in charge of the monastery's experimental garden. Conducted his experiments there with pea plants Had controled variables, and the independent variables Dominant and recessive traits were formed. Took 8 years to complete
Major Contributions The results formed the first and second rules of heredity:
1. the law of segregation; this law states that genes are always in pairs and
during division of the cell and each gene will be present in half the cell.
2. the law of independent assortment; which states each pair of genes is
inherited independently of all other pairs. It's only true if the chracteristics
are located on different chromosomes. Mendel also discovered these laws of heredity. 1) heredity factors must exist
2) two factors exist for each characteristic
3) At the time of sex cell formation, heredity factors of a pair separate equally into the gametes (the sperm or the egg)
4) gametes bear only one factor for each characteristic
5) gametes join randomly no matter what factors they carry
6) different hereditary factors sort independently when gametes are formed
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