The study of stable changes in the expression of a particular gene that occur without changes in DNA base sequences is called

Researcher Michael Gazzaniga studied patients who had what is called a "split brain" procedure, in which the corpus callosum is cut to reduce seizures that threaten the brain health of a patient. As a result of his research,

what was Gazzaniga able to determine about the relationship between the right cerebral hemisphere and language? a. The right cerebral hemisphere has no discernible access to language. b. The right cerebral hemisphere is important for labeling shapes and colors, but not for producing linguistic concepts. c. The right cerebral hemisphere is the dominant part of the brain when it comes to language skills. d. The right cerebral hemisphere is only available to produce language and attach labels to things seen by the left eye.

Who comprises the source of adolescents' happiest experiences?

a. Friends b. Parents c. Extended family d. Siblings