NEET Biology: Principles of Inheritance and Variation — MCQ Test 12

Q6. Which of the following best describes the principle of segregation?

Q7. Which of the following correctly describes pleiotropy?

Q8. Which of the following statements about sex-linked inheritance is incorrect?

Q9. Which of the following represents an example of pleiotropy?

Q10. Which genetic phenomenon explains why genes located close together on the same chromosome tend to be inherited together?

NEET Biology — Principles of Inheritance and Variation

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Which of the following statements about mutation is incorrect?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Biology preparation, focusing specifically on the chapter Principles of Inheritance and Variation. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Following, Statements, Mutation, Incorrect, Statement, and Multiple.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. Which of the following statements about mutation is incorrect?

  • A. Mutations can be beneficial, neutral, or harmful.
  • B. All mutations are inherited by the next generation.
  • C. Point mutations involve a single nucleotide change.
  • D. Frameshift mutations occur due to insertions or deletions.

Q2. Which of the following is an incorrect statement about multiple allelism?

  • A. A gene can have more than two alleles in a population.
  • B. An individual can inherit more than two alleles for a single gene.
  • C. ABO blood group is an example of multiple allelism.
  • D. Multiple allelism contributes to genetic diversity.

Q3. Which of the following statements correctly defines a dominant allele?

  • A. An allele that is expressed only in the homozygous state
  • B. An allele that is always recessive
  • C. An allele that is expressed even in the heterozygous state
  • D. An allele that does not contribute to the phenotype

Q4. What is the genetic cause of sickle-cell anemia?

  • A. Trisomy of chromosome 21
  • B. Substitution of glutamic acid by valine in hemoglobin
  • C. Deletion of X chromosome
  • D. Duplication of the HBB gene

Q5. Which of the following genetic disorders is incorrectly matched with its cause?

  • A. Down’s syndrome - Trisomy 21
  • B. Turner’s syndrome - 45, XO
  • C. Klinefelter’s syndrome - 47, XYY
  • D. Edward’s syndrome - Trisomy 18

+ 5 more questions in the actual test

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