Frequent question: Why did TH Morgan choose Drosophila?

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 Drosophila for his genetic experiment?

Why did Morgan choose Drosophila for his genetics experiments? A single mating can produce many offspring. Drosophila chromosomes can be easily distinguishable under a light microscope. … Among the F2 progeny, only males had white eyes.

Why was Drosophila chosen?

He chose Drosophila because of the following reasons: They were suitable to grow on synthetic medium in laboratory. Their life cycle is complete in two weeks. Single mating produces many progeny flies.

Why is the white-eyed characteristic more common in males?

Because the white-eye allele is recessive, a female will have white eyes only if she has the white-eye allele on both her X chromosomes. However, in males, a single copy of the white-eye allele on the lone X chromosome will lead to white eyes because no other allele is present.

Is white-eyed Drosophila recessive?

The eye color gene is located on the X chromosome (one of the sex determining chromosomes of Drosophila). White eye color is recessive. … Therefore, there can be no red-eyed males in the first generation, but they will appear in the second and later generations.

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What does Drosophila mean in English?

1 capitalized : a genus of small dipteran flies that include many (as D. melanogaster) extensively used in genetic research. 2 : any fly of the genus Drosophila.

What are the benefits of choosing Drosophila for genetic experiments?

There are many technical advantages of using Drosophila over vertebrate models; they are easy and inexpensive to culture in laboratory conditions, have a much shorter life cycle, they produce large numbers of externally laid embryos and they can be genetically modified in numerous ways.

How are Drosophila similar to humans?

Drosophila genome is 60% homologous to that of humans, less redundant, and about 75% of the genes responsible for human diseases have homologs in flies (Ugur et al., 2016).

Can female 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.

Why must males inherit colorblindness from their mothers?

Red/green colour blindness is passed from mother to son on the 23rd chromosome, which is known as the sex chromosome because it also determines sex. Chromosomes are structures which contain genes – these contain the instructions for the development of cells, tissues and organs.

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