What is the purpose of the fruit fly experiment?
What is the purpose of the fruit fly experiment?
Morgan decided to use fruit flies to study how physical traits (for example, eye color) were transmitted from parents to offspring, and he was able to elegantly show that genes are stored in chromosomes and form the basis of heredity. This work won him a Nobel prize in 1933 and marked the birth of modern genetics.
What was the conclusion of Drosophila experiment?
He concluded that closer the genes, greater the linkage and vice-versa. Note: He also discovered the white eye mutation in Drosophila. He chooses Droshophila to study the sex-linked genes. The mutation is inherited differently by male and female flies he said.
How do you experiment fruit flies?
Cover the jar with a paper towel. Secure the paper towel with a rubber band. Using the magnifying glass, try to observe fruit flies and see if you can identify the males and females. Keeping the paper towel secure, observe the fruit flies every day for at least ten days using the magnifying glass.
Who did the fruit fly experiment?
geneticist Thomas Hunt Morgan
One day in 1910, American geneticist Thomas Hunt Morgan peered through a hand lens at a male fruit fly, and he noticed it didn’t look right. Instead of having the normally brilliant red eyes of wild-type Drosophila melanogaster, this fly had white eyes.
What scientists understand by studying fruit flies?
The relationship between fruit fly and human genes? is so close that often the sequences of newly discovered human genes, including disease genes, can be matched with equivalent genes in the fly. 75 per cent of the genes that cause disease in humans are also found in the fruit fly.
Why are fruit flies a good model organism?
Due to their small size and minimal requirements, many Drosophila can be raised and tested within a small laboratory which does not have access time, space or funding. Genetic factors also make this fly an ideal model organism. D. melanogaster only has four pairs of chromosomes compared to 23 pairs in humans.
What were the conclusions of Morgan’s experiment conducted with a mutant white eyed male fruit fly?
Morgan began breeding the white-eyed mutant fly and found that in one generation of flies, the trait was only present in males. 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 are the conclusions drawn by TH Morgan from the crossing experiments in Drosophila with respect to linkage class 12?
Detailed Answer: Based on his experiment, T.H. Morgan concluded that (a) When two genes were situated on the same chromosome, the proportion of parental gene combinations was much higher than the non parental type. This is due to linkage.
In which of Studies 1 and 2 did some of the fruit flies?
Passage I. Question 1, “In which of Studies 1 and 2…” The answer is “Study 2; 5% SY medium.” This question tests your ability to interpret data. This question asks which study (Study 1 or Study 2) had fruit flies that lived for more than 75 days, and what diet these fruit flies ate.
How many stages did you observe in the life cycle of the fruit fly?
There are four stages to the life cycle of fruit flies, these are: eggs, larvae (maggots), pupae and adults.
What conclusions did Morgan arrive at with his experiments on fruit flies?
Morgan discovered a mutation that affected fly eye color. He observed that the mutation was inherited differently by male and female flies. Based on the inheritance pattern, Morgan concluded that the eye color gene must be located on the X chromosome.
How did Morgan’s research with fruit flies explain?
How did Morgan’s research with fruit flies explain Punnett’s and Bateson’s observation of pea plants? Morgan concluded that linked genes were on the same chromsomes. Explain how linked genes and cross-over frequencies are used to make linkage maps.