Looking for classes? Ksquare Career Institute, Bengaluru →
The fruit fly $Drosophila\ melanogaster$ was found to be very suitable for experimental verification of chromosomal theory of inheritance by Morgan and his colleagues because
A
It reproduces parthenogenetically
B
A single mating produces two young flies
C
Smaller female is easily recognisable from larger male
D
It completes life cycle in about two weeks
Detailed Solution
Morgan chose the fruit fly because: it can be grown on a simple synthetic medium in the laboratory; it completes its life cycle in about two weeks; a single mating produces a large number of progeny flies; the sexes are clearly differentiated; and it has many types of hereditary variations visible under a low-power microscope.
So 'it completes its life cycle in about two weeks' is a correct reason.
It reproduces sexually, not parthenogenetically.
A single mating produces a large number of flies, not two.
The male is smaller than the female, not the other way round.
Hence the correct reason is that it completes its life cycle in about two weeks.
So 'it completes its life cycle in about two weeks' is a correct reason.
It reproduces sexually, not parthenogenetically.
A single mating produces a large number of flies, not two.
The male is smaller than the female, not the other way round.
Hence the correct reason is that it completes its life cycle in about two weeks.