NEET Biology: Principles of Inheritance and Variation — MCQ Test 13

Q6. Which of the following statements about mutations is correct?

Q7. Which of the following is an example of multiple allelism?

Q8. Which scientist is credited with discovering the X-chromosome?

Q9. Which of the following statements about genetic mutations is incorrect?

Q10. Which type of mutation results in the addition or deletion of a nucleotide, shifting the reading frame?

NEET Biology — Principles of Inheritance and Variation

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Which mode of inheritance is observed in Thalassemia?

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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 Inheritance, Observed, Thalassemia, Following, Describes, and Codominance.

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 mode of inheritance is observed in Thalassemia?

  • A. Autosomal dominant
  • B. Autosomal recessive
  • C. X-linked recessive
  • D. Y-linked

Q2. Which of the following best describes codominance?

  • A. One allele is dominant over the other
  • B. Both alleles contribute equally to the phenotype
  • C. The heterozygote shows an intermediate phenotype
  • D. A single gene affects multiple traits

Q3. Which of the following statements about codominance is incorrect?

  • A. Both alleles are fully expressed in the heterozygous state.
  • B. Blood group AB is an example of codominance.
  • C. One allele completely dominates the other in codominance.
  • D. Codominance differs from incomplete dominance.

Q4. What is the expected phenotypic ratio of a dihybrid cross in F2 generation if genes show complete dominance?

  • A. 3:1
  • B. 9:3:3:1
  • C. 1:2:1
  • D. 2:1

Q5. Which of the following is a correct statement about independent assortment?

  • A. It applies to genes located on the same chromosome.
  • B. It states that allele pairs separate independently during gamete formation.
  • C. It occurs only in linked genes.
  • D. It was not part of Mendel’s original findings.

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