Epigenetics

True or False: Epigenetic changes can be passed on to future generations.

• True

• False

• Only in certain species

• Only if the environment changes

What is the significance of epigenetic changes in development?

• They have no impact on gene expression.

• They regulate gene expression patterns that determine cell differentiation and function.

• They only affect physical traits, not gene expression.

• They are solely responsible for genetic mutations.

What is the difference between genetic mutations and epigenetic changes?

• Genetic mutations change the DNA sequence, while epigenetic changes affect gene expression without altering the DNA sequence.

• Genetic mutations are reversible, while epigenetic changes are permanent.

• Genetic mutations occur only in somatic cells, while epigenetic changes occur in germ cells.

• Genetic mutations are caused by environmental factors, while epigenetic changes are solely genetic.

Can epigenetic changes be reversed?

• Yes, some epigenetic changes can be reversed, allowing for potential therapeutic interventions.

• No, epigenetic changes are permanent and cannot be altered.

• Yes, but only in certain organisms, not in humans.

• Yes, but it requires extensive genetic modification.

How can environmental factors influence epigenetics?

• Environmental factors can lead to epigenetic changes that affect gene expression.

• Environmental factors have no impact on gene expression.

• Environmental factors only affect physical traits, not gene expression.

• Environmental factors can only influence genetic mutations.

Tags

NGSS.HS-LS3-2

True or False: Epigenetic changes are permanent.

• True

• False

• Sometimes

• Only in certain conditions

What is a genome?

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

• The genome is a type of protein that helps in cellular functions.

• The genome refers to the physical structure of an organism's body.

• The genome is a collection of all the species in a particular habitat.

What is the epigenome?

• The epigenome is the complete set of epigenetic modifications on the genetic material of a cell, influencing gene activity.

• The epigenome is a type of protein that helps in DNA replication.

• The epigenome refers to the physical structure of the cell nucleus.

• The epigenome is a collection of all the genes present in an organism.

Tags

NGSS.HS-LS3-2

What role do histones play in gene expression?

• Histones are proteins that help package DNA into a compact form, influencing gene accessibility and expression.

• Histones are enzymes that break down DNA during replication.

• Histones are lipids that provide energy for gene transcription.

• Histones are carbohydrates that stabilize the DNA structure.

At what stage in the life of identical twins is the epigenome expected to be most similar?

• Age 6 months

• Age 1 year

• Age 3 years

• Age 10 years