About Epigenetics

The Role of Epigenetics in Health:

Find Out the Facts The word “epigenetics” often makes people think of characters in a science fiction movie. However, this is not so. Epigenetics refers to the study of the external factors that influence how our genes are expressed. Simply put, it’s about how our genes respond to external stimuli, which in turn determines how they are activated or deactivated. In simpler terms, epigenetics is about all the things that impact the way your DNA operates without changing your actual genes.

Why is the study of epigenetics important?

The study of epigenetics is important because it helps scientists understand how different environmental factors affect our health. This can help in the development of new drugs and treatments. It can also be used to understand the link between health and our environment. It is believed that epigenetic changes are implicated in the development of several diseases, including cancer and diabetes. The impact of epigenetics on human health is so significant that scientists believe it can be used as an early warning signal for many diseases.


The role of epigenetics in our health gives us a better understanding of how external factors affect our health. This can help in the development of new drugs and treatments. It can also help us understand the link between health and our environment. The impact of epigenetics on human health is so significant that scientists believe it can be used as an early warning signal for many diseases. In the future, epigenetics could be used to identify people at risk of developing disease. It could also be used to predict the effectiveness of different treatments. This means epigenetics could be used as a tool to help improve people’s health.

Following are some of the multiple choice questions on the Epigenetics with answers that will help the students in developing their knowledge.

Epigenetics MCQ

1. In the context of epigenetics, which of the following is defined as a random change in genetic sequence?

  • A phenotype
  • A mutation
  • Soft inheritance
  • Heritability

2. Who is the father of genetics?

  • Darwin
  • Mendel
  • Einstein
  • Franklin

3. What is the term for the study of how traits are passed from parents to offspring?

  • Genes
  • Epigenetics
  • Genetics
  • Acquired

4. Traits that are passed down and are found in your DNA are called _____________ traits.

  • inherited
  • acquired
  • homozygous
  • heterozygous

5. Humans have this many pairs of chromosomes.

  • 32
  • 12
  • 23
  • 46

6. Which of the following is homozygous recessive?

  • RR
  • Rr
  • rR
  • rr

7. One uppercase and one lowercase letter are alleles for what type of trait?

  • Homozygous
  • Heterozygous (hybrid)
  • Phenotype
  • Allele

8. Black hair is considered what?

  • Genotype
  • Allele
  • Phenotype
  • Probability

9. The letters that make up your genes are called what?

  • Alleles
  • Genotype
  • Phenotype
  • Probability

10. What term refers to mixture or blending of two traits?

  • Codominance
  • Non-dominance
  • Complete dominance
  • Incomplete dominance

11. When two phenotypic traits are expressed at the same time, this is called what?

  • Complete dominance
  • Incomplete dominance
  • Codominance
  • Non-dominance

12. Tags on your DNA that occur because of your environment are called what?

  • Epigenetics
  • Alleles
  • Genes
  • Phenotypes

13. DNA has a ______ strand; RNA has a ______ strand.

  • double/double
  • double/triple
  • double/single
  • single/single

14. The "central dogma" states that genetic information flows from 

  • Protein-->mRNA-->DNA
  • Protein-->DNA-->mRNA
  • mRNA-->DNA-->Protein
  • DNA-->mRNA-->Protein

15. Where does transcription take place?

  • nucleus
  • ribosome
  • cytoplasm
  • smooth ER

16. Which is the mRNA molecule that would be transcribed from this DNA template:TGGCAA


17. True or false, mutations create genetic diversity?

  • True
  • False

18. The complete instructions for making an organism, consisting of the genetic material in that organism's chromosomes.

  • genome
  • epigenome
  • genetic markers
  • RNA codon

19. Study of the inherited changes in gene expression, occurs without changing gene sequence and influence gene expression.

  • genomics
  • epigenetics
  • bionomics
  • fetal genetics

20. Which of these increases gene expression?

  • methylation
  • transcriptase
  • helicase
  • DNA acetylation

21. What are the single stranded RNAs that bind to messenger RNAs and prevent translation into proteins?

  • miRNAs
  • tRNA
  • mRNA
  • DNA

22. What is the most common context in which DNA methylation occurs in vertebrates

  • CpG methylation
  • genomic imprinting
  • histone modifications
  • epigenetics

23. What are possible symptoms of Autism Spectrum Disorder?

  • impaired cognitive abilities
  • impaired physical abilities
  • altered physical appearance
  • All of above

24. Which of the following is not an example of an epigenetic cause of trait variation? 

  • Histone acetytlation 
  • Different exon sequences
  • Imprinting
  • X-chromosome inactivation 

25. In terms of epigenetics, acetylated histones usually result in which of the following?

  • Increase in transcription/ gene expression
  • Decrease in transcription/ gene expression
  • Increase in DNA - lamina association
  • Decrease in DNA - lamina association 

26. What is an epigenomics?

  • focuses on processes that regulate how and when certain genes are turned on and turned off, 
  • is the study of how genes and how traits are passed down from one generation to the next.
  • is a multitude of chemical compounds that can tell the genome what to do.
  • none of the above

27. The complete instructions for making an organism, consisting of all the genetic material in that organism's chromosomes.

  • genome
  • epigenome
  • genetic markers
  • RNA codon

28. Protein molecules around which DNA is tightly coiled in chromatin

  • Histones
  • Whey
  • Casein
  • Hemoglobin

29. A chemical modification of DNA that does not affect the nucleotide sequence of a gene but makes that gene less likely to be expressed.**(grow your brain)

  • methylation
  • acetylation
  • transcription
  • translation

30. Activation or deactivation of genes by environmental experiences throughout development

  • turn on genes
  • gene expression
  • environmental factors
  • gene markers

31. Even though your body changes and you develop new physical and behavioral characteristics, your _______ never changes.

  • archetype
  • phenotype
  • appearance
  • genotype

32. Organism that is a combination of two different alleles of an organism (ie. Long hair + short hair = medium hair)

  • hybrid
  • genes
  • chromosomes
  • dominant

33. Something that overshadows or covers a lesser version of that thing

  • hybrid
  • genes
  • dominant
  • mitosis

34. The process of using the DNA code to produce the physical traits of an organism

  • sexual reproduction
  • mitosis
  • heredity
  • gene expression

35. The stage during which chromosomes condense and become visible

  • mitosis
  • asexual reproduction
  • prophase
  • gene expression

36. Sections of DNA code inherited from parent to offspring

  • genes
  • chromosomes
  • prophase
  • hybrid

37. Unique offspring produced by combining the genes of two different parents

  • mitosis
  • asexual reproduction
  • sexual reproduction
  • hybrid

38. The passage of genetic instructions from one generation to the next

  • mitosis
  • chromosomes
  • gene expression
  • heredity

39. A ________ can be defined as a coiled-up thread of DNA.

  • neuron
  • chromosome
  • cortisol
  • glial cell

40. A(n) ________ is a small segment of DNA that contains information for producing protein(s).

  • cortisol
  • neuron
  • axon
  • gene


  • no mutation
  • substitution
  • insertion
  • deletion

42. What are the three types of mutation? 

  • Insertion, Deletion, Subsitution
  • Deletion, Newstion, Subsitution 
  • Newstion, Deletion, Insertion 
  • Insertion, Newstion, Substitution 

43. Original: ATC CATMutation: ATC GCATWhat mutation occurred?

  • deletion
  • insertion
  • silent
  • transverse

44. What mutation has occurred here? T-G-A-C-C-AT-G-A-G-C-A

  • Substitution
  • Deletion
  • Insertion
  • Frameshift 

45. These chemical tags inactivate or silence a gene.

  • acetyl groups
  • methyl groups
  • histones
  • genes

46. This term refers to the chemical tags that affect gene function and may be passed on through generations.

  • genome
  • methylation
  • epigenome
  • autosomes

47. Why do identical twins begin to look different as they age?

  • they look identical but their DNA has always been different
  • Mutations accumulate which deactivates histone proteins.
  • The addition of epigenetic tags result in changes in gene function.
  • The DMNT gene is silenced.

48. What role do cell signals play in cell specialization?

  • Cell signals encourage DNA replication at the promoter.
  • Cell signals silence genes unrelated to the cell's purpose.
  • Cell signals are influenced by temperature changes.
  • None of the above.

49. Where does TRANSCRIPTION occur?

  • Nucleus
  • Ribosome
  • Cytoplasm
  • Mitochondria

50. Does the order of amino acids in a protein matter?

  • YES!
  • NO!

Enjoyed the Quiz. Share this with friends


Add Your Review

Your email address will not be published.

Subscribe to Newsletter!

Subscribe to get latest updates and information.