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Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation5 Marks
Question
Discuss why Drosophila has been used extensively for genetical studies.
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Answer

Morgan worked with the tiny fruit files, Drosophila melanogaster, which were found very suitable for such studies, as:
  1. They could be grown on simple synthetic medium (ripe banana) in the laboratory.
  2. They complete their life cycle in about two weeks.
  3. A single mating could produce a large number of progeny flies.
  4. There was a clear differentiation of the sexes – the male and female flies are easily distinguisable.
  5. It has many types of hereditary variations that can be seen with low power microscopes.

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