Genetic Screening

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Question description

Discussion - Week 4


Genetic Screening

Epigenetic influences mean that genetic expression can only be fully understood in the context of environment. Likewise, environmental influences may be quite different, depending on the particular genes that are present. The intertwined effects of experience and gene expression have implications far beyond the theoretical questions of how cells in the developing brain interact with one another. As society approaches the era when anyone might be able to have their entire genome decoded for a modest price, and scientists learn more about which genetic variants can increase or decrease the risk of mental health disorders, there is a greater need for understanding how genes can impact the human mind.

For this week’s Discussion, you examine the relationship between environment and gene expression, and consider ethical implications of genetic screening for medical and psychological disorders.

With these thoughts in mind:

Post by Day 4 a description of how environment and experience might impact gene expression. Explain why possessing a gene making one vulnerable to disease does not necessarily result in developing the disease. Finally, describe two ethical considerations when using genetic screening for medical and psychological disorders. Support your postings and responses with specific references to the literature and Learning Resources.

Read a selection of your colleagues' postings.

References to use

  • Breedlove, S. M., & Watson, N. V. (2018). Behavioral neuroscience (8th ed.) New York, NY: Oxford University Press.
    • Chapter 7, “Life-Span Development of the Brain and Behavior”
  • Jacobson, K. (2009). Considering interactions between genes, environments, biology, and social context. Psychological Science Agenda, 23(4).
    Retrieved from the Walden Library databases.
  • Lebel, C., Roussotte, F., & Sowell, E. R. (2011). Imaging the impact of prenatal alcohol exposure on the structure of the developing human brain. Neuropsychology Review, 21(2), 102–118. Retrieved from
  • Murgatroyd, C., & Spengler, D. (2011). Epigenetics of early child development. Front Psychiatry, 2(16), 1–16. Retrieved from

Tutor Answer

School: UCLA




Genetic Screening
Student’s Name


Genetic screening

Examine the relationship between environment and gene expression, and consider ethical
implications of genetic screening for medical and psychological disorders.
Although the environment may not affect the DNA sequence, the functioning of the
genes or rather gene expression is vulnerable to environmental effects (Jacobson, 2009).
Epigenetics refers to hereditary dynamics in the expression of the genes which does not involve
changes in the underlying DNA. As such, exposure to drugs, foods, or toxins exposure exposes
genes to changes through alteration of the manner in which t...

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