DNA, Genes & Genetics MCQs with Answers

DNA fingerprinting is basically done for ?

• A.Carbohydrate estimation
• B.Protein synthesis
• C.RNA sequencing
• D.DNA analysis

Past Paper MCQ

DNA polymerase was first discovered from the cell of which organism in 1956?

• A.Saccharomyces cerevisiae
• B.E. coli
• C.Bacillus subtilis
• D.Streptococcus pneumoniae

A heterozygous individual which carries unexpressed recessive gene for a sex-linked character is known as _?

• A.Carrier
• B.Mutant
• C.Hybrid
• D.Hemizygous

Identify non-heritable characters from the following: Lost organ, Eye color, Height, Detached ear lobes

• A.Lost organ
• B.Eye color
• C.Height
• D.Detached ear lobes

In a Hardy-Weinberg population with two alleles, A and a, that are in equilibrium, the frequency of the allele a is 0.4. What is the percentage of the population that is homozygous for this allele?

• A.4%
• B.16%
• C.36%
• D.48%

In biotechnology, vaccines can be developed by cloning of ?

• A.Gene for antigen of pathogen
• B.Whole pathogen cell
• C.Antibody of the host
• D.Plasma membrane of pathogen

Heterozygote advantage should be most closely linked to which of the following?

• A.Directional selection
• B.Stabilizing selection
• C.Disruptive selection
• D.Artificial selection

Genetic information from the DNA to mRNA and then to cytoplasm takes place in two steps i.e. translation and _?

• A.Transcription
• B.Replication
• C.Transformation
• D.Mutation

All of the following nucleotides are present in RNA molecule except?

• A.Adenine
• B.Guanine
• C.Thymine
• D.Cytosine

Enzymes required for transcription is?

• A.DNA polymerase
• B.RNA polymerase
• C.Reverse transcriptase
• D.Helicase