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What did Thomas Hunt Morgan prove?
4, 1945, Pasadena, Calif.), American zoologist and geneticist, famous for his experimental research with the fruit fly (Drosophila) by which he established the chromosome theory of heredity. He showed that genes are linked in a series on chromosomes and are responsible for identifiable, hereditary traits.
How did Morgan’s results support those of Mendel?
By comparing the observed results with the predicted results, Morgan determined that his hypothesis was supported. In one mating, Morgan took a red-eyed male and mated it with a white-eyed female. He predicted and observed that half of the flies would be red-eyed females and the other half would be white-eyed males.
How did Thomas Morgan demonstrate that some genes are linked?
By painstakingly examining thousands upon thousands of flies with a microscope and a magnifying glass, Morgan and his colleagues confirmed the chromosomal theory of inheritance: that genes are located on chromosomes like beads on a string, and that some genes are linked (meaning they are on the same chromosome and …
What did Thomas Morgan conclude?
Morgan’s conclusion—that the white-eye trait followed patterns of sex chromosome inheritance—was at once very specific and very grand. A few years prior to these test crosses, Mendelian ideas of inheritance had been enthusiastically discussed by many researchers in the context of new findings about chromosomes.
What organism was used by Thomas Hunt Morgan?
Drosophila
Thomas Hunt Morgan
| Thomas Hunt Morgan ForMemRS | |
|---|---|
| Died | December 4, 1945 (aged 79) Pasadena, California |
| Nationality | United States |
| Alma mater | University of Kentucky (B.S.) Johns Hopkins University (Ph.D.) |
| Known for | Establishing Drosophila melanogaster as a major model organism in genetics Linked genes |
What did Thomas Hunt Morgan discover that seemed to violate Mendel’s principles?
What did Thomas Hunt Morgan discover that seemed to violate Mendel’s principles? Thomas Morgan discovered that some genes appeared to be linked; This seemed to violate the principle of independent assortment.
What was Thomas Hunt Morgan’s main contribution to science?
What was Thomas Hunt Morgan’s main contribution to science? He discovered that certain traits were linked to the X chromosome. Which allele combination represents a female who is a carrier for an X-linked recessive disorder?
What organism did Morgan and his colleagues use to develop the chromosomal theory of inheritance What traits did they track?
Thomas Hunt Morgan (1866–1945) and his colleagues spent several years carrying out crosses with the fruit fly, Drosophila melanogaster. They performed meticulous microscopic observations of fly chromosomes and correlated these observations with resulting fly characteristics.
What law violates the chromosomal theory of inheritance?
Explanation: The chromosomal theory of inheritance violated none of Mendel’s laws as the only difference was the genes being present in the chromosome, other than that the laws are as they were.
What are the main points of chromosomal theory of inheritance?
Key points: Boveri and Sutton’s chromosome theory of inheritance states that genes are found at specific locations on chromosomes, and that the behavior of chromosomes during meiosis can explain Mendel’s laws of inheritance.
How did Thomas Hunt Morgan contribute to genetics?
In the following years, Morgan and a group of scientists at Columbia University established the chromosome theory of inheritance, which described the role that chromosomes play in heredity.
When did Mendel and Morgan start their experiments?
It is said that he started working with mice, but having experiments involving animal sex in the monastery was not well received. So, he did pilot experiments and observations for two years with pea plants, and in 1856 he began the experiments that lead to his important publication in 1866.
Why did Thomas Hunt Morgan breed white eyed flies?
That year, Morgan was breeding Drosophila, or fruit flies. After observing thousands of fruit fly offspring with red eyes, he obtained one that had white eyes. Morgan began breeding the white-eyed mutant fly and found that in one generation of flies, the trait was only present in males.
How did Mendel contribute to the study of genetics?
Mendel’s Genetics. While Mendel’s research was with plants, the basic underlying principles of heredity that he discovered also apply to people and other animals because the mechanisms of heredity are essentially the same for all complex life forms. Through the selective cross-breeding of common pea plants ( Pisum sativum)…