Drosophila melanogaster is found to be very suitable for genetic studies because
(i) They could be grown in simple synthetic medium in the laboratory
(ii) They complete their life-cycle in about 14 days
(iii) A single mating could produce a large number of progents
(iv) Male and females are clearly distinguishable
(v) It has few hereditary variations that can be seen with high power microscopes
Select how many are correct statements.