Whenever Keith discusses current events with his classmates, he tends to be overly certain in his opinions and intolerant of anyone else's opinion. Even when evidence contradicts him, Keith finds it difficult to change his beliefs. According to Rokeach, Keith would be described as exhibiting

A parent hits a child for misbehaving and then later on that child hits his sibling for breaking a toy. Assuming the child hit his sibling because he was imitating his parent's behavior, this would be an example of ______________

a. Evolutionary learning b. Natural selection c. Observational learning d. Cognitive learning

In a dominance relation, if the dominant allele is present, its characteristic is always

a. masked. b. sex-linked. c. combined. d. observed.