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प्रश्न
Why did T. H. Morgan select Drosophila melanogaster to study sex linked genes for his lab experiments ?
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उत्तर
T. H. Morgan selected Drosophila melanogaster to study sex-linked genes in his lab experiment due to the following reasons:
(i) Drosophila melanogaster has short life cycle, high reproductive rate and has sex chromosomes similar to that of humans, that is, females have XX chromosomes while males have XY chromosomes (however, their sex determination mechanism is different from humans).
(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.
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संबंधित प्रश्न
What are the chromosomes XY and XX known as?
The sex of a child is determined by which of the following?
(a) the length of the mother's pregnancy
(b) the length of time between ovulation and copulation
(c) the presence of and X chromosome in an ovum
(d) the presence of a Y chromosome in a sperm
Short Answer Question.
“Father is responsible for determination of sex of child and not the mother”. Justify.
Explain the mechanism of sex determination in humans with a suitable chart.
Which type of sex determination is observed in honey bee?
Diploid larvae which get royal jelly as food develops into ____________ and other develops into workers (sterile females).
Number of autosomes present in liver cells of a human female is ______.
Grasshopper is an example of XO type of sex determination in which the males have ______.
Female heterogamy is shown by
