DNA, Genes & Genetics MCQs with Answers

What are chromosomes primarily composed of?

• A.Nucleoprotein
• B.Lipoprotein
• C.Glycoprotein
• D.Phosphoprotein

The main role of mRNA during protein synthesis is to?

• A.Carry genetic information for protein synthesis
• B.Transport amino acids to ribosomes
• C.Form the structural component of ribosomes
• D.Catalyze peptide bond formation

DNA molecule does not contain ?

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

If the disease is caused due to a defective gene located on the X chromosome, then the defective gene can only be transmitted to male offspring by the _?

• A.Female gamete
• B.Male gamete
• C.Both male and female gametes
• D.Somatic cell

Function of enzyme reverse transcriptase is ?

• A.Degradation of RNA into nucleotides
• B.Synthesis of mRNA from DNA
• C.Synthesis of protein from mRNA
• D.Synthesis of cDNA from mRNA

Which of the following is not an inherited characteristic in animals?

• A.Eye colour
• B.Blood type
• C.Communication skill
• D.Coat colour

In mitochondrial DNA the codon AGG codes for?

• A.Arginine
• B.Stop Codon
• C.Glycine
• D.Methionine

The genetic makeup that your parents have transferred to you for your hair color, makes up your:

• A.Genotype
• B.Phenotype
• C.Karyotype
• D.Allele

In DNA, guanine pairs with?

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

Pick the correct option about Drosophila:

• A.Salivary gland cells have giant chromosomes in their nuclei
• B.They lack chromosomes in their salivary gland cells
• C.Their salivary gland cells contain only haploid chromosomes
• D.They have the smallest chromosomes among all insects