NEET Biology: Principles of Inheritance and Variation — MCQ Test 2

Q6. What is the genetic composition of a male in the XY sex determination system?

Q7. What is the term for a single gene controlling multiple phenotypic traits?

Q8. Which of the following statements best describes co-dominance?

Q9. Which of the following statements about sex determination is incorrect?

Q10. Which of the following statements about Mendelian genetics is correct?

NEET Biology — Principles of Inheritance and Variation

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Which of the following statements regarding mutations 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, Regarding, Mutations, Incorrect, and Disorders.

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 regarding mutations is incorrect?

  • A. Point mutations involve a single nucleotide change.
  • B. Frameshift mutations occur due to insertions or deletions.
  • C. All mutations are harmful to an organism.
  • D. Mutations can be spontaneous or induced.

Q2. Which of the following genetic disorders is caused due to a point mutation in the β-globin gene?

  • A. Down’s syndrome
  • B. Sickle-cell anemia
  • C. Turner’s syndrome
  • D. Hemophilia

Q3. Which of the following inheritance patterns is exhibited by human blood groups?

  • A. Incomplete dominance
  • B. Co-dominance and multiple allelism
  • C. Polygenic inheritance
  • D. Pleiotropy

Q4. Which of the following is an example of a disorder caused by non-disjunction of sex chromosomes?

  • A. Down’s syndrome
  • B. Klinefelter’s syndrome
  • C. Thalassemia
  • D. Sickle-cell anemia

Q5. Which of the following represents the genotype of a carrier female for hemophilia?

  • A. XX
  • B. XhX
  • C. XhY
  • D. XY

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