Epigenetics_HB - Jessica Valverde | Biblioteka

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The difference between DNA code and the epigenome is that the DNA code is

flexible, while the epigenome is fixed for life

fixed for life, while the epigenome is flexible

determined by the environment, while the epigenome is not

determined by one's stress level, while the epigenome is not

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How is trauma passed down through genetics?

Through changes in physical appearance

By transferring the traumatic memories directly

Through the activation or deactivation of certain genes in the sex cells

By altering the DNA sequence in offspring

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

genome

epigenome

genetic markers

RNA codon

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What is epigenetics?

A branch of genetics that deals with the DNA sequence of ancestors

A study of how trauma affects our DNA sequence

A scientific field investigating how our environment influences our genes without altering the DNA sequence

A study of genetic mutations over generations

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Which factor can affect the epigenome?

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

True

False

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Every cell has a copy of every gene

True

False

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All genes are expressed in every cell

True

False

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Which statement best describes a valid gene—environment interaction on behavior?

Identical twins adopted by different families often display behaviors typical of their adoptive families.

In rats, littermates reared by mothers of different strains display the same exploratory behavior as their biological siblings.

Two people with the same physical appearances may not share the same genome.

Shrews raised in a lab without their mother fail to nurture their young.

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What role does stress play in epigenetics?

It has no impact on gene expression

It changes the DNA sequence to adapt to stress

It can cause certain genes to be more active

It only affects the individual experiencing stress