Gene Environment Paper

Topics: Genetics, Gene, Biology Pages: 3 (572 words) Published: February 24, 2015
Maritza Pacheco
January 25, 2015
Janice Haskins
Understanding Check 1 –Gene-Environment Interaction Paper
Sandra Scarr and Kathleen McCartney proposed their theory of genotype on environmental effects in 1983 (Scarr & McCartney, 1983). Their theory describes that an individual’s genes influence the environments they interact with and how phenotypes impact a person’s interactions with people, places, and situations (Scarr & McCartney, 1983). Scarr explains three types of genes that are present in human development (1983). The first type is passive. Parents provide an environment for an infant. This in return, reflects the nature of the parental genes making the children inherit their parent’s genetic tendencies. Evocative is the second type of gene where children’s genetic tendencies are inspired from the environment that funds a certain trait; development and experiences are influenced by evocation than by passive environment (Scarr & McCartney, 1983). The last group is active. This type explains that children actively pursue “niches” in their environment that correlate to their specific genotypes and choose environments to intermingle with (Scarr & McCartney, 1983).

In relation to the mechanism of passive, my parents provided a healthy and stable environment while I was growing up. They constantly showed me how to show respect and to always accept someone for who they are and not by what they look like. Another key role they showed me was to always try my best even if in the end I did not succeed. All of their genetic tendencies that I was exposed to while growing up, I now have gained. Now that I am a mother, I am providing the same type of safe and stable environment for my son.

However, under the category of evocative, my genetic make-up has influenced many of my experiences. For example, when I didn’t do as well on an exam. I knew it was because I wasn’t prepared for it and would have to study harder the next time. My parents...

References: Scarr, S., & McCartney, K. (1983). Child Development. How People Make Their Own Environments: A
Theory of Genotype →Environment Effects (Scarr & McCartney, 1983) (2nd ed., Vol. 54, pp. 424-435). Wiley.
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