Author Question: Compare and contrast genotype-environment correlation with genotype-environment interaction. What ... (Read 214 times)

tuffie · **on:** Jun 21, 2018

Compare and contrast genotype-environment correlation with genotype-environment interaction.

What will be an ideal response?

Question 2

Twins that are the product of the fertilization of two eggs by two sperm often at the same time are called fraternal or ____________ twins.

Fill in the blank(s) with the appropriate word(s).

brittanywood · **Reply #1 on:** Jun 21, 2018

Answer to Question 1

Answer: A genotype-environment interaction occurs when a genotype responds differently to a given environment. A genotype-environment correlation occurs when a genotype is exposed differently to an environment. An example of the former from the book is the study of Russian juvenile delinquents, the majority of which had experienced maternal rejection; only those with a particular genotype experienced clinical depression as a result of this environmental event. That group carried a gene that is fragile to exposure to the excess dopamine that is often the result of rejection. An example of genotype-environment correlation is one in which a group of infants seek out verbal interaction with caregivers as a result of their genes. Here they are not passive, but are genetically encouraged to behave in a particular way.

Answer to Question 2

Answer: dizygotic