 |
||||
|
|
||||
|
Thomas Morgan |
||||||
 |
Thomas Hunt Morgan was awarded the Nobel Prize for his contribution in the field of Medicine. He was a pioneer in the field of genetics. This American geneticist, in 1910, first discovered that some traits are sex-linked, that is, passed on only to one or the other of the sexes. He was the one who invented the technique of genetic mapping. He did his famous research into chromosomes using the fruit fly Drosphilia melanogaster. In the beginning Morgar disagreed with the findings of the 19th century Austrian monk and biologist, Gregor Mendel who had first formulated the laws of heredity. But after his experiments Morgan became a supporter of Mendel. Morgan found that traits are passed on from parents to offspring through the units of heredity he called 'genes'. He also concluded that genes are arranged in a fixed linear order on chromosomes.
|
|||||
|
||||||
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
|
