The fruit fly Drosophila melanogaster wa...

The fruit fly Drosophila melanogaster was found to be very suitable for experimental verification of chromosomal theory on inheritance by Morgan and his colleagues because

It reproduces parthenogenetically

A single mating produces two young flies

Smaller female is easily recognisable from larger male

It completes life cycle in about two weeks

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Experimental verification of chromosomal theory of inheritance was given by

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Drosophila melanogaster was found to be suitable for experiments by T.H. Morgan due to some of its specific features. These features are all, except

Morgan chose fruit files ( Drosophila melanogaster ) as the study model for his experiment. Certain reason made this organism suitable for the study . Which of the following is not one such reason ?

Morgan worked with Drosophila melanogaster because. i) they complete their life cycle in two months. ii) male and female are easily distinguishable. iii) a single mating could produce a large number of progeny flies. iv) it has many types of hereditary variations that can be seen with low power microscopes.

Morgan carried out several dihybrid crosses in Drosophila and found F_(2) -rations deviated very significantly from the expected Mendelian ratio. Explain his findings with the help of and example.

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