Class 12 · Biology
Principles of Inheritance and Variation
NEET questions.
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250 verified questions · NCERT chapter mapped · automatic error log
BiologyPlate 56
NeetVellum atlas · fig. biology
56
Question preview
Three examples from the live 250-question bank. Answers appear after attempting them in practice mode.
Example 1 · difficulty 3/5
In a cross between pure round-yellow (RRYY) and wrinkled-green (rryy) pea plants, all F1 progeny were round-yellow. If 320 F2 offspring are raised by selfing the F1 plants, how many of them are expected to be heterozygous for both seed shape and seed colour?
- A. 20
- B. 40
- C. 60
- D. 80
Example 2 · difficulty 2/5
A man with blood group AB marries a woman with blood group O. According to the multiple allelism concept of the ABO system, what are the possible blood groups of their biological children?
- A. Only group AB
- B. Only group O
- C. Group A or group B in equal proportions
- D. Any one of the four groups A, B, AB or O
Example 3 · difficulty 3/5
A man suffering from haemophilia, an X-linked recessive disorder, marries a woman who is homozygously normal for the gene concerned. Which one of the following statements about their offspring is correct?
- A. All of their sons will be haemophilic.
- B. All of their daughters will be carriers.
- C. Half of their daughters will be haemophilic.
- D. Half of their sons will be haemophilic.
The chapter mastery loop
- 1. Attempt firstExpose recall gaps before rereading.
- 2. Classify the missConcept, careless, rushed or guessed.
- 3. Re-practiceReturn until the error pattern disappears.
Frequently asked questions
How many Principles of Inheritance and Variation NEET questions are available?
NeetVellum publishes 250 verified questions for this chapter. Free accounts use the daily UG quota; UG Pro removes it.
How should I revise Principles of Inheritance and Variation for NEET?
Attempt questions before rereading, classify each miss, revisit the exposed NCERT concept, then re-practice until the error pattern disappears.