DNA, Genes & Genetics MCQs with Answers

Past Paper MCQ

In which year was DNA polymerase discovered from the cell of E. coli?

• A.1953
• B.1956
• C.1962
• D.1944

The chromosomes was first observed by _?

• A.Walther Flemming
• B.Gregor Mendel
• C.Robert Hooke
• D.Charles Darwin

A nucleotide consists of ?

• A.A nitrogenous base and a phosphate group
• B.A nitrogenous base and a pentose sugar
• C.A pentose sugar and a phosphate group
• D.All of these

Father transfers 'Y' Chromosomes to _?

• A.Son
• B.Daughter
• C.Both Son and Daughter
• D.Neither Son nor Daughter

What is the structure of DNA?

• A.Single helix
• B.Double helix
• C.Triple helix
• D.Linear chain

Which one of the following is the application of meiosis?

• A.Production of identical daughter cells
• B.Growth and repair of body tissues
• C.Asexual reproduction in bacteria
• D.Reproduction of germ cells

Which statement about chromosome is correct?

• A.Chromosomes are made entirely of proteins
• B.Chromosomes include a long molecule of DNA divided into sections called genes
• C.Chromosomes are found only in the cytoplasm of the cell
• D.Chromosomes are single-stranded RNA molecules

The anticodon loop of the tRNA that complements mRNA is?

• A.DHU loop
• B.Middle loop
• C.TΨC loop
• D.Variable loop

What is an allele?

• A.A type of RNA molecule
• B.A complete set of chromosomes
• C.A gene variant at a specific locus
• D.A protein-coding segment only

Nucleic acid is present in ?

• A.DNA only
• B.RNA only
• C.DNA and RNA
• D.All of these