How did Morgan figure out that eye color was on the X chromosome of the fruit fly?

How did Morgan figure out that eye color was on the X chromosome of the fruit fly?

Males displayed the white eye trait because the trait was present on their only X chromosome. 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.

Who discovered that Drosophila eye color is linked to the X chromosome?

In brief, Morgan had discovered that eye color in Drosophila expressed a sex-linked trait. All first-generation offspring of a mutant white-eyed male and a normal red-eyed female would have red eyes because every chromosome pair would contain at least one copy of the X chromosome with the dominant trait.

Why did TH Morgan Select Drosophila Melanogoster for his experiments How was it different from Mendel SL What did he propose instead?

T. H. Morgan selected Drosophila melanogaster to study sex-linked genes in his lab experiment due to the following reasons: (ii) Sex-linked traits such as red eye colour and white eye colour are found only in Drosophila ​melanogaster, where white eye colour in males is a sex-linked recessive trait.

Why did Morgan Choose fruit flies?

Morgan preferred to work with fruit-flies because: Readily available and can be reared and bred under laboratory conditions. It has a short life span which is around 2 weeks and can be bred throughout the year and numerous generations can be obtained.

Why did Morgan Choose fruit flies for his genetic studies?

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.

Why did Morgan Select Drosophila melanogaster for his experiment?

Explanation: T.H. Morgan choose Drosophila Melanogaster for his experiments because. It is easily available on Banana or Mango fruits. Inside the bottles flies can be reared.

What are the conclusions of Morgan’s experiment on Drosophila?

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.

What conclusions did Morgan arrive at with his experiments on fruit flies?

Why was Thomas Hunt Morgan interested in Drosophila?

Later that year, Morgan made an observation that eventually provided evidence in support of the chromosome theory. In 1910, Morgan was studying Drosophila at Columbia University to find what he called mutants, or individual flies that had atypical, heritable characteristics, such as white eyes instead of the normal red eyes.

Why is eye color called X linked trait?

If a trait, like eye color, correlated with a specific factor on the X chromosome, then the trait was called X-linked. Because males only have one X chromosome, they display all X-linked traits.

Which is the dominant trait in Morgan’s cross?

All 1237 offspring of this cross had red eyes. Thus red eye is a dominant trait. Cross 2: Morgan then allowed males and females of F 1 generation to mate and produce F2 generation. There was following progeny in

How are eye colour genes linked to sex?

However, Morgan obtained a surprising result. All the males were white eyed while all the females were red eyed. Taking all the crosses into consideration Morgan came to the conclusion that eye colour gene is linked to sex and is present on the X-chromosome.

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