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Q. Statement I : Traits which are generally controlled by three or more genes are called as pleiotropic traits.
Statement II : Henking gave a name $X$ body for a chromosome in insects, and also explained its significance.

Principles of Inheritance and Variation

Solution:

Traits which are generally controlled by three or more genes are called as polygenic traits.
Henking gave a name $X$ body for a chromosome in insects but couldn’t explain its significance.