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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
Differentiate between ‘ZZ’ and ‘XY’ type of sex-determination mechanisms.
What are the chromosomes XY and XX known as?
Which of the two, sperm or ovum, decides the sex of the child?
Which of the following combinations of sex chromosomes produce a male child : XX or XY?
In a human, how many chromosmes are present in a sperm in the testes?
In a human, how many chromosmes are present in a skin cell?
Which of the following is incorrect regarding ZW-ZZ type of sex determination?
Chromosomal constitution of normal human females can be written as ______.
In humans, males are heterogametic and females are homogametic. Explain. Are there any examples where males are homogametic and females heterogametic?
What is the probability of a girl or a boy being born into a family? Justify your answer.
