Barbara McClintock (Hartford, 16 de junho de 1902 — Huntington, 2 de setembro de 1992) foi uma citogeneticista estadunidense, doutora em botânica [2] [3] [4] e vencedora do prêmio Nobel de Fisiologia ou Medicina de 1983 pela descoberta dos elementos genéticos móveis, que causam o fenômeno conhecido como transposição genética. Thomas McClintock was the child of British immigrants; Sara Ryder Handy was descended from an old American Mayflower family.
This particular part of her work influenced a generation of students, as it was included in most textbooks.
Get exclusive access to content from our 1768 First Edition with your subscription. Nació el 16 de junio de 1902 en Hartford (Connecticut, Estados Unidos). McClintock died of natural causes in In 2001, McClintock was the subject of a biography by the science historian Many recent biographical works on women in science feature accounts of McClintock's work and experience. コネチカット州 ハートフォードに生まれる。 Chapt 5, pp. Barbara McClintock, la descubridora de los «genes saltarines» Eleanor McClintock nació el 16 de junio de 1902 en Hartford, Connecticut, Estados Unidos. "Harriet Creighton: Proud botanist". Barbara McClintock 1902. június 16-án született a connecticuti Hartfordban Thomas Henry McClintock orvos és felesége, Sara Handy Grace négy gyermeke közül a harmadikként. Barbara McClintock (June 16, 1902 – September 2, 1992) was an American scientist and cytogeneticist who was awarded the 1983 Nobel Prize in Physiology or Medicine. McClintock, Barbara. She was also able to show that, in some plants, spontaneous chromosome breakage occurred in the cells of the endosperm. 2005. A los cuatro meses, se le cambia el nombre por el de Barbara. In 1944 which American biologist, along with Oswald T. Avery and Colin M. MacLeod, used bacteria to provide the first experimental evidence that the genetic material of living cells is composed of DNA? McClintock died of natural causes in In 2001, McClintock was the subject of a biography by the science historian Many recent biographical works on women in science feature accounts of McClintock's work and experience. It is now equally painful to recognize the fixity of assumptions that many persons hold on the nature of controlling elements in maize and the manners of their operation. En 1919 se matriculó en la Facultad de Agronomía de la Universidad de Cornell, en Nueva York. Proceedings of the National Academy of Sciences 17:492–497.McClintock, Barbara. Barbara McClintock was born Eleanor McClintock on June 16, 1902 in The McClintock family moved to Brooklyn in 1908 and McClintock completed her secondary education there at During her graduate studies and postgraduate appointment as a botany instructor, McClintock was instrumental in assembling a group that studied the new field of McClintock's cytogenetic research focused on developing ways to visualize and characterize maize chromosomes. "Records and recollections: A new look at Barbara McClintock, Nobel Prize-Winning geneticist". She also developed a technique using In 1930, McClintock was the first person to describe the cross-shaped interaction of homologous chromosomes during McClintock's breakthrough publications, and support from her colleagues, led to her being awarded several postdoctoral fellowships from the During her time at Missouri, McClintock expanded her research on the effect of X-rays on maize cytogenetics. This became painfully evident to me in my attempts during the 1950s to convince geneticists that the action of genes had to be and was controlled. She earned her PhD in botany from Cornell University in 1927 and became a leader in the development of maize cytogenetics. Our editors will review what you’ve submitted and determine whether to revise the article.McClintock, whose father was a physician, took great pleasure in In 1931 she and a colleague, Harriet Creighton, published “A Correlation of Cytological and Genetical Crossing-over in McClintock’s work was ahead of its time and was for many years considered too radical—or was simply ignored—by her fellow scientists.
91-118, in Hans-Jörg Rheinberger and Jean-Paul Gaudilliere (eds. Barbara McClintock is an award-winning Children's book author and illustrator. I997. McClintock observed the breakage and fusion of chromosomes in irradiated maize cells. Over the course of Although her research was progressing at Missouri, McClintock was not satisfied with her position at the University. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox.Articles from Britannica Encyclopedias for elementary and high school students. One must await the right time for conceptual change.The importance of McClintock's contributions was revealed in the 1960s, when the work of French geneticists McClintock was widely credited with discovering transposition after other researchers finally discovered the process in bacteria, yeast, and In 1947, McClintock received the Achievement Award from the McClintock spent her later years, post Nobel Prize, as a key leader and researcher in the field at Cold Spring Harbor Laboratory on Long Island, New York. She recalled being excluded from faculty meetings, and was not made aware of positions available at other institutions.In early 1941, she took a leave of absence from Missouri in hopes of finding a position elsewhere. A los cuatro meses, se le cambió el nombre por el de Barbara. Barbara McClintock, la descubridora de los «genes saltarines» Eleanor McClintock nació el 16 de junio de 1902 en Hartford, Connecticut, Estados Unidos. 2003. She studied how these characteristics are passed down through generations and linked this to changes in the plants' chromosomes. "Records and recollections: A new look at Barbara McClintock, Nobel Prize-Winning geneticist". Barbara McClintock, American scientist whose discovery in the 1940s and ’50s of mobile genetic elements, or “jumping genes,” won her the Nobel Prize for Physiology or Medicine in 1983. Falleció en Huntington, Nueva York, el 3 de septiembre de 1992. 聴衆は、マクリントックの発表を沈黙で迎えた。マクリントックの観察によれば、聴衆の一部は失笑し、何かぶつぶつとつぶやく者もいた。マクリントックはこのような聴衆の反応にかなりのショックを受けた（ずっと後になってからの話であるが、この時の聴衆がマクリントックを否定したり嘲笑したりしたわけではなく、単にマクリントックの説明を理解できなかっただけだと推定する人もいるその後ようやく、マクリントックの「動く遺伝子」仮説を裏付けるような発見が次々と発表されることになった。Kass, L. B. and W. B. Provine.
19, May): 6641-6656.Kass, Lee B.