Question

An extensive study was conducted on identical twins who were separated at birth. Among other things, the study showed that the individual from each pair who received better nutrition during childhood tended to score higher on standardized intelligence tests. This can best be described as an example of how

A. mutation alters genotype.
B. environment alters phenotype.
C. environment alters genotype.
D. mutation alters genotype.
E. pleiotropic genes affect more than one trait.

Answer 1

The study you mentioned is an example of how environment alters phenotype(b). Identical twins who were separated at birth and received better nutrition during childhood tended to score higher on standardized intelligence tests. This study provides evidence of the interplay between genetics and the environment and how they can both contribute to the development of intelligence.

Step-by-step explanation:

The study you mentioned is an example of how environment alters phenotype(b).

Identical twins who were separated at birth and received better nutrition during childhood tended to score higher on standardized intelligence tests. This shows that the environment, in this case, better nutrition, can have an impact on the expression of genes and the observable characteristics or traits of an individual.

This study provides evidence of the interplay between genetics and the environment and how they can both contribute to the development of intelligence.