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Gregor Mendel
Gregor Mendel was also know as the "father of genetics." Mendel discovered the fundamental laws of inheritance and that genes come in pairs are inheritaed as distint units, one from each parent. Mendel found the Law of Segregation, The Law of Independent Assortment, and The law of Dominace. Mendels pea plants expiriments took eight years
(1856-1863) and he published the results in 1865. http://www.dnai.org/timeline/
https://en.wikipedia.org/wiki/Gregor_Mendel -
Friedrich Miescher
Miescher isolated the first crude preperation od DNA, ( he didn't know it but it was nuclein). He found it mostly in quanities of pus. Nuclein was made up of hydrogen, oxygen, nitrogen, and phosphrous and there unique ratio of phosphrous to nitrogen. http://www.dnai.org/timeline/
http://www.dnaftb.org/15/bio.html -
Erich Von Tschermak - Seysengg
Plant breeding expirements, independtly derivied "mendelian" laws of inheritance from his plant expirments. He produced high yeilding food crops such as wheat, barley, and oats. http://www.dnai.org/timeline/
http://www.britannica.com/biography/Erich-Tschermak-von-Seysenegg -
"Fly room"
Thomas Morgan used fruit flies and their behavior to explain inheritance, and he also provided proof for the chromosomal theroy of heredity, genetic linkage, chromosomal crossing over and non-adjusting. http://www.dnai.org/timeline/
http://www.nature.com/scitable/topicpage/thomas-hunt-morgan-the-fruit-fly-scientist-6579789 -
Hermann Muller
X-rays induce mutations and Muller had also won a nobel prize winning research. http://www.dnai.org/timeline/
https://en.wikipedia.org/wiki/Hermann_Joseph_Muller -
Barbara McClintock
Harriet Creighton and Barbara worked on chromosomal crossovers occuring in corn chromosomes. Nobel prize for physlology or medicine in 1983. Correlate chromosome behavior with the results of breeding expirments in corn (maize) http://www.dnai.org/timeline/
https://en.wikipedia.org/wiki/Barbara_McClintock -
George Beadle and Edward Tatum
He wrote a paper on genetic mutations in the mold neurospora crassa, and subsequently was dubbed the "one gene - one enzyme" hypothesis http://www.dnai.org/timeline/
http://www.genomenewsnetwork.org/resources/timeline/1941_Beadle_Tatum.php -
Evelyn Witkin
She identified a strain of E. coli bacteria known as B/r that was more resistant to radiation than the parental B strain. This was the first time mutations conferring resistane to radiation has been isolated. http://www.dnai.org/timeline/
https://en.wikipedia.org/wiki/Evelyn_M._Witkin
https://en.wikipedia.org/wiki/Evelyn_M._Witkin -
Erwin Chargaff
(A=T and C=G) He discovered two rules that helped lead to the discovery of the double helix structure of DNA. The two rules are the number of guanine units equals the number of cysoine units, and also, amounts of guanine, cytosine, adenine, and thymine bases varies from one species to another http://www.famousscientists.org/erwin-chargaff/ http://www.dnai.org/timeline/ -
Rosalind Franklin
He is best known fro work on the X-ay diffraction images and it also led to the discovery of the double helix. He also won a Nobel Prize in Chemistry. http://www.dnai.org/timeline/
https://www.sdsc.edu/ScienceWomen/franklin.html -
Chase & Hershey
DNA is genetic material. He also bacteriophages which are composed of DNA and protein, Infect bacteria, and their DNA enters the host bacterial cell, but most protein does not. He also shared a Nobel Prize in 1969. http://www.dnaftb.org/18/bio-2.html http://www.dnai.org/timeline/ -
Crick & Watson
They described the structure of DNA. Each strand of DNA molecule was a template for the other. During cell divison the two strands seperate and on each strand a new 'other half' is bulit.The DNA can reproducewithout changing its structure. -
Aurthur Kornberg
"The mechanisisms in biological synthese of deoxyribnucleic acid. He also recieved the award in Enzyme. http://www.dnai.org/timeline/
https://en.wikipedia.org/wiki/Arthur_Kornberg -
Marshall Nirenberg
Synthetic messenger RNA made of only uracils can direct protein synthesis. Which was the first made genetic code. Also he matched amino acides to synthetic triplet nucleotides. http://www.dnai.org/timeline/
https://en.wikipedia.org/wiki/Marshall_Warren_Nirenberg -
Roy Britten
He repeated DNA sequences in the genome of eukaryotic organisms and later on the evolution of the genome. http://www.dnai.org/timeline/ -
David Baltimore
The viral DNA synthesis, Baltimore became a research associate at the salk Institute where he workedon poliovirus. HE found that RNA genome of poliovirus became mRNA message once it entered the cytoplasm https://en.wikipedia.org/wiki/David_Baltimore http://www.dnai.org/timeline/
http://www.dnai.org/timeline/ -
Herbert Boyer
He devopled the method for synthesizing human insulin using recombinant DNA technology. Genetch continues to be one of the biggest biotech companies in the world. He also founded the company and created a biotech industry. http://www.dnaftb.org/34/bio-2.html http://www.dnai.org/timeline/ -
Roger Kornberg
Kornberg figured out the importance of chromatin structure and he also showed 51 amino acids of the insulin protein are arranged in a specific order. http://www.dnai.org/timeline/ -
Thomas cech
Cech found out organic molecules can be made in the pre-life conditions of earth. But, its a long way from molecules bumping into each other to from short chains to the long chain molecules that carry heredity information. https://en.wikipedia.org/wiki/Thomas_Cech http://www.dnai.org/timeline/ -
Dolly the Sheep
Dolly was the 1st mammal to be cloned usuing nuculear trasfers. They cloned him on Jult 5, 1996 and dolly died from progressive lund diease 5 months before his 17th birthday. https://en.wikipedia.org/wiki/Dolly_(sheep) -
Pat Brown
He used a technique where cDNA's can be embeded onto glass slides and it helped with large scale studies of DNA. http://www.dnai.org/timeline/
https://en.wikipedia.org/wiki/Patrick_O._Brown
