Identify the organism on which the Chromosomal theory of inheritance was experimented.

Correct option is C

The correct answer is (C) Drosophila melanogaster



Explanation:
• The chromosomal theory of inheritance, originally proposed by Sutton and Boveri, was experimentally verified by Thomas Hunt Morgan and his colleagues.
• Morgan used fruit flies, scientifically known as Drosophila melanogaster, for his genetic experiments.

Information Booster:
• Drosophila was chosen because it can be easily grown in the lab, has a short life cycle (about 2 weeks), and distinct sexual dimorphism.
• Morgan discovered sex-linked inheritance through his work on the white-eyed mutation in these flies.

Additional Knowledge:
• Escherichia coli (Option A): A bacterium widely used in molecular genetics (like the Hershey-Chase experiment).
• Pisum sativum (Option B): The garden pea, used by Gregor Mendel to discover the fundamental laws of inheritance.
• Mus musculus (Option D): The house mouse, widely used as a mammalian model organism.