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Mendelian Genetics and Heredity - Higher Difficulty Problems

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This section is dedicated to challenging and conceptually demanding problems based on Mendelian genetics and heredity. It is designed for advanced Class 11–12 students, NEET aspirants targeting top ranks, and undergraduate learners who want to rigorously test and strengthen their depth of understanding.

In this section, you will work on:

  • Multi-step problems involving monohybrid and dihybrid crosses

  • Complex ratio-based and probability-driven questions

  • Assertion–reason and multi-statement problems

  • Advanced pedigree analysis based on Mendelian inheritance

  • Problems involving test cross, back cross, and modified ratios

  • Analytical questions integrating linkage and Mendelian laws

  • Previous-year inspired and high-trap competitive questions

The content is structured to enhance analytical reasoning, improve accuracy under pressure, and prepare students to handle the toughest questions in NEET and other competitive examinations.

Sharpen your problem-solving skills and master complexity by practicing higher-difficulty problems in Mendelian genetics and heredity.

Q. In a pedigree chart, what does a filled circle represent?
  • A. A male
  • B. A female
  • C. An affected individual
  • D. A carrier
Q. In a test cross, an individual with a dominant phenotype is crossed with which type of individual?
  • A. Homozygous dominant
  • B. Heterozygous
  • C. Homozygous recessive
  • D. Any individual
Q. In Mendelian genetics, what does the term 'allele' refer to?
  • A. A variant form of a gene
  • B. A type of chromosome
  • C. A phenotype
  • D. A genetic disorder
Q. What is the expected genotypic ratio from a monohybrid cross between two heterozygous parents (Aa x Aa)?
  • A. 1:2:1
  • B. 3:1
  • C. 9:3:3:1
  • D. 1:1
Q. What is the expected phenotypic ratio of a dihybrid cross between two heterozygous individuals (AaBb x AaBb)?
  • A. 3:1
  • B. 9:3:3:1
  • C. 1:2:1
  • D. 1:1
Q. What is the primary function of the ribosome in the cell?
  • A. DNA replication
  • B. RNA synthesis
  • C. Protein synthesis
  • D. Gene regulation
Q. What is the probability of obtaining a homozygous recessive offspring from a cross between two heterozygous parents (Aa x Aa)?
  • A. 0.25
  • B. 0.50
  • C. 0.75
  • D. 1.00
Q. Which of the following represents a genotype that is homozygous recessive?
  • A. AA
  • B. Aa
  • C. aa
  • D. A_
Q. Which type of mutation results in a change in a single amino acid in a protein?
  • A. Silent mutation
  • B. Nonsense mutation
  • C. Missense mutation
  • D. Frameshift mutation
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