The following quotes summarize key concepts in biology. For each one, describe a real-life example illustrating each of these principles: • "The behavioral consequences of genetic instructions depend on the environment in which those instructions are implemented.". • "Genes can influence the kind of environment to which a person is exposed.". • "Environmental influences typically make

Question

children within a family different.".

What will be an ideal response?

Answer 1

The disease phenylketonuria (PKU) illustrates the first concept. Individuals with PKU accumulate phenylalanine in the body, which damages the nervous system and can lead to intellectual disabilities. However, when infants who have the genotype for PKU are immediately placed on a diet that limits phenylalanine, the disease does not appear. Niche-picking is the process of deliberately seeking environments that fit one's heredity. One example of this is when bright children seek intellectually stimulating environments that make them even smarter. Nonshared environmental influences within a family make children different from each other. One example is when parents are more affectionate with one child than another.