MCQs on Mendelian Inheritance Pattern Questions and Answers

MCQs on Mendelian Inheritance Pattern Questions and Answers

Mendelian Inheritance Pattern – Definition


Mendelian Inheritance Pattern in the Law of segregation indicates that, how pairs of gene variants are separated into reproductive cells. Interpretation of the crosses in the law of segregation clearly indicates the dominant and recessive alleles, phenotypes, genotypes, homozygous and heterozygous organisms Here we discuss about the complete detail of interpretation of the crosses during the law of segregation by Gregor Mendel in the form of MCQs. All the MCQs on “Mendelian Inheritance Pattern” Questions and Answers are published according to the new study syllabus for academic year 2021-22.


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All of these objective questions on “Mendelian Inheritance Patternin Zoology MCQs are preferably for test / interview preparation for BSc, MSc, BS (Hons), NTS, FPSC, PPSC, PTS, CSS, MDCAT, ECAT, MCAT and all other competitive examination for foreign study including overseas students.


Mendelian Inheritance Pattern MCQs Multiple Choice Questions and Answers


𓇼 Gene And Alleles:

Q1. Which is the basic physical and functional unit of heredity?

  1. DNA
  2. Gene
  3. Allele
  4. All of the above

Answer: b

Q2. The alternative forms of gene are called:

  1. Genome
  2. DNA
  3. Allele
  4. Gamete

Answer: c

𓇼 Dominant And Recessive  Alleles:

Q3. Which allele hides the expression of recessive alleles?

  1. Dominant allele
  2. Recessive allele
  3. Both a and b
  4. None

Answer: a

Q4. The alleles whose expression can be masked are called:

  1. Dominant allele
  2. Recessive allele
  3. Both a and b
  4. None

Answer: b

Q5. During F1 generation in the law of segregation, the allele whose expression can be masked by dominant allele is:

  1. wild-type allele
  2. vestigial allele
  3. none

Answer: b


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Q6. The dominant allele in F1 generation in the law of segregation is wild-type allele for wing shape.          True/false

Answer: True

𓇼 Phenotypes And Genotypes:

Q7. The physical expression of a gene is called:

  1. genotype
  2. genome
  3. phenotype
  4. punnett square

Answer: c

Q8. The genetic makeup of a gene is called:

  1. genotype
  2. genome
  3. phenotype
  4. punnett square

Answer: a

Q9. F1 generation in the law of segregation carry both dominant and recessive alleles, so they differ genotypically, hence they are called:

  1. homozygous
  2. hybrids
  3. same phenotype
  4. dominant alleles

Answer: b

𓇼 Homozygous And Heterozygous:

Q10. If an organism carries two identical genes for a given trait, then it is called:

  1. heterozygous organism
  2. homozygous organism
  3. hybrid organism
  4. None

Answer: b

Q11. Only true breeding flies are crossed when the organism is heterozygous.      True/False

Answer: True


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Q12. If the genes are different then the organism is:

  1. heterozygous organism
  2. homozygous organism
  3. none

Answer: a

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