Class 12 Biology — Chapter 4: Principles of Inheritance and Variation
92 practice questions · 31 Easy · 31 Medium · 30 Hard
Free NCERT-aligned multiple-choice practice for Class 12 Biology, Chapter 4 (Principles of Inheritance and Variation). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 92.
Sample questions
The father of modern genetics is:
Gregor Mendel formulated the laws of inheritance using pea plant experiments.
In a monohybrid cross between two heterozygotes (Tt × Tt), the F₂ phenotypic ratio is:
Tt × Tt → 1 TT : 2 Tt : 1 tt. Phenotype ratio = 3 dominant : 1 recessive.
Mendel's law of segregation is based on which cellular event?
Allele pairs separate when homologous chromosomes separate in anaphase I of meiosis.
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