In 1910, Thomas Hunt Morgan performed an experiment at Columbia University, in New York City, New York, that helped identify the role chromosomes play in heredity. … Through more breeding analysis, Morgan found that the genetic factor controlling eye color in the flies was on the same chromosome that determined sex.
What did Morgan discover about fruit flies?
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 the Morgan discover?
Thomas Hunt Morgan was awarded the Nobel Prize in Physiology or Medicine in 1933. The work for which the prize was awarded was completed over a 17-year period at Columbia University, commencing in 1910 with his discovery of the white-eyed mutation in the fruit fly, Drosophila. Morgan received his Ph.
What did Morgan conclude from his experiment?
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 conclusions did Morgan arrive at with his experiments on fruit flies?
What conclusions did Morgan arrive at with his experiments on fruit flies? Why did they extend Mendel’s conclusions? Morgan concluded from his experiments that each chromosome is actually a group of linked genes.
What is the gender of all of the white-eyed flies?
Although the first generation of 1,237 offspring was all red-eyed but for three, white-eyed flies appeared in larger numbers in the second generation. Surprisingly, all white-eyed flies were male.
What was the result when Morgan mated a white-eyed male?
When Thomas Hunt Morgan mated a white-eyed male fly with a red-eyed female, he came to the startling conclusion that the trait for eye color was located on the chromosome that determines sex. … F2 generation: The offspring showed a ratio of three red-eyed flies to one white- eyed fly.
Who is the father of linkage?
In the early 1900s, William Bateson and R. C. Punnett were studying inheritance in the sweet pea.
What was the most likely conclusion of Morgan’s research?
What was the most likely conclusion of Morgan’s research? The pigment in butterfly wings absorbs light from the environment. The phenotypic expression of wing shape depends on color pigmentation in butterflies.
Can female fruit flies have white eyes?
All of the females and all of the males will have red eyes. All of the females will have white eyes; half of the males will have red eyes, and half of the males will have white eyes.
Is the recessive trait always hidden?
The recessive trait is hidden in the heterozygous individual (Dd) if the other allele is inherited in a dominant fashion, and so this person is a called a “carrier” of the recessive allele, but does not manifest the disease or trait.
What is the purpose of the fruit fly experiment?
The purpose of our fruit fly experiment was to learn about genetics which is the study of DNA, genes and traits. We also studied mutations, which are the changing of an organism’s genes and DNA sequence which makes the organism different than that of its species, and the effects of it on our flies.
When Morgan crossed red-eyed F1 generation fruit flies to each other?
1) When Thomas Hunt Morgan crossed his red-eyed F1 generation flies to each other, the F2 generation included both red- and white-eyed flies. Remarkably, all the white-eyed flies were male.