Principles of Inheritance and Variation: Class 12 Biology (MP Board) important questions and practice
Principles of Inheritance and Variation is chapter 4 of 13 in MP Board Class 12 Biology. Below are the topics the paper draws from, the question types that come up again and again, and a free practice test on this chapter alone.
Topics in this chapter
- Mendel's laws: dominance, segregation, independent assortment; monohybrid and dihybrid crosses
- Incomplete dominance, co-dominance and multiple alleles (ABO blood groups)
- Chromosomal theory of inheritance and linkage (Morgan)
- Sex determination: XX-XY, XO, ZW, haplodiploidy; honeybee
- Pedigree analysis and Mendelian disorders: haemophilia, colour blindness, sickle cell anaemia, thalassaemia, PKU
- Chromosomal disorders: Down's, Klinefelter's, Turner's syndromes
What examiners usually ask
- Explain co-dominance with the example of ABO blood grouping in humans
- A colour-blind woman marries a normal man; work out the cross and state the probability of a colour-blind son
- Describe the chromosomal basis of Down's syndrome, Klinefelter's syndrome and Turner's syndrome
Exam tip
Master the sex-linked cross for haemophilia and colour blindness because a genetics problem on it appears almost every year; write the parental genotypes, gametes and a Punnett square, and quote the ratio clearly.
Principles of Inheritance and Variation on other boards and exams
Frequently asked questions
What are the important questions from Principles of Inheritance and Variation for MP Board Class 12?
The question types listed above repeat most often in MP Board Class 12 Biology papers for this chapter. Practise them with the chapter test and then attempt them inside a full previous-year paper under time.
Is Principles of Inheritance and Variation in the MP Board Class 12 Biology syllabus?
Yes. Principles of Inheritance and Variation is part of the current MP Board Class 12 Biology syllabus, as listed on this site from the prescribed textbook.
Can I practise Principles of Inheritance and Variation MCQs in Hindi?
Yes. The chapter test and explanations are available in Hindi and English, with an AI doubt solver for any question.