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NEETZoologyPrinciples of Inheritance and Variation

What type of crosses did Morgan carry out in Drosophila to study genes that were sex-linked?

Options

  1. AMonohybrid crosses
  2. BTest crosses
  3. CDihybrid crosses
  4. DBack crosses

Correct answer

C. Dihybrid crosses

Step-by-step solution

Morgan carried out several dihybrid crosses in Drosophila to study genes that were sex-linked. The crosses were similar to the dihybrid crosses carried out by Mendel in peas. For example Morgan hybridized yellow-bodied, white-eyed females to brown-bodied, red-eyed males and intercrossed their F1 progeny. He observed that the two genes did not segregate independently of each other and the F2 ratio deviated very significantly from the 9:3:3:1 ratio (expected when the two genes are independent

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