gene-environment interaction study pt 2
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Questions and Answers

explain model B

the genotype increases the effects of the environmental risk but without the environmental risk, there is no disease.

explain model C

(the opposite of model B) the environmental risk factor increases the effect of the genotype on disease development. but without the genotype, there is no disease.

explain model D

both the environmental risk factor and genotype are equally required to cause disease

explain model E

<p>the environmental risk factor and the genotype both have some effect on disease risk, but risk is higher when they occur together than alone</p> Signup and view all the answers

Which of the following best describes a gene-environment interaction?

<p>c) Both genetic and environmental factors contribute to traits, and their effects depend on each other.</p> Signup and view all the answers

In a study investigating gene-environment interactions, researchers find that individuals with a specific genetic variant are more likely to develop a certain health condition when exposed to a particular environmental toxin. What type of gene-environment interaction does this suggest?

<p>c) Interactive</p> Signup and view all the answers

Which of the following factors poses a challenge to reproducibility in gene-environment interaction studies?

<p>a) Complexity of genetic variations</p> Signup and view all the answers

What is a potential consequence of publication bias in gene-environment interaction studies?

<p>b) Overestimation of the strength of gene-environment interactions</p> Signup and view all the answers

Which statistical method is commonly used to assess gene-environment interactions in epidemiological studies?

<p>c) Logistic regression</p> Signup and view all the answers

Epigenetics is considered an underlying mechanism of gene-environment interactions because it involves:

<p>b) Alterations in gene expression without changes to the DNA sequence</p> Signup and view all the answers

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