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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
How are Mendelian inheritance, polygenic inheritance and pleiotropy different from each other?
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Answer

Mendelian Inheritance
Polygenic inheritance
Pleiotropy
One gene controls one trait/ character/ phenotype.
Two or more genes influence the expression of one trait/ character/ phenotype.
One genes controls the expression of more than one trait/character/ phenotype.

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