Advertisements
Advertisements
Question
Why did T. H. Morgan select Drosophila melanogaster to study sex linked genes for his lab experiments ?
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Write the types of sex-determination mechanisms the following crosses show. Give an example of each type.
(i) Female XX with Male XO
(ii) Female ZW with Male ZZ
Define the following:
Autosomes
Define the following:
Sex-linked characters
Sex is determined in human beings ______.
The ‘X’ body of Henking was observed in ______.
Number of autosomes present in liver cells of a human female is ______.
Haplodiploidy is found in ______.
Human offspring’s sex is determined ______
Which of the following determines the sex of a child?
Also describe as to, who determines the sex of an unborn child? Mention whether temperature has a role in sex determination.
