MCQs Molecular Genetics

By: Prof. Dr. Fazal Rehman | Last updated: May 14, 2025

1. : Which of the following has ‘DNA’ molecules?
(A) Negative charge
(B) Positive charge
(C) Neutral
(D) All of the above

2. : Which of the following DNA requires?
(A) Sunlight
(B) Protein synthase
(C) Meiotic division
(D) Many enzymes

3. : What are ‘Purine’ and ‘pyrimidine’?
(A) Nitrogen
(B) Nucleotides
(C) Nitrogenous bases
(D) Nucleoside

4. : Which is an example of a genetic disorder, sickle-cell anaemia?
(A) Pleiotropy
(B) Epistasis
(C) Heterozygous dominance
(D) Homozygous dominance

5. : Which is the sequence of three ‘nucleotides’?
(A) Message
(B) Code
(C) Codon
(D) Amino acid

6. : Which of the following genotypes causes Klinefelter syndrome?
(A) XO
(B) XXY
(C) XX
(D) XYY

7. : ‘DNA’ abbreviation is ______.
(A) Ribonucleic acid
(B) Deoxyribonucleic acid
(C) Nucleic acid
(D) Proteins

8. : When you notice that someone has unusually blue eyes, you’ve noticed there.
(A) Phenotype
(B) Genotype
(C) Allele
(D) Hybridization

9. : What is “AUG”?
(A) Stop codon
(B) Start codon
(C) Intermediate
(D) Valine

10. : The synthesis of RNA from DNA is called.
(A) Translation
(B) Duplication
(C) Replication
(D) Transcription

11. : The synthesis of proteins at ‘ribosomes’ is called as.
(A) Transcription
(B) Duplication
(C) Translation
(D) Replication

12. : Which code is used for “UUG”?
(A) Methionine
(B) Leucine
(C) Serine
(D) Valine