Which memory system provides us with a very brief representation of all the stimuli present at a particular moment?

Selfless, altruistic behavior is exhibited by

a. the heroes who risk their lives while saving the lives of others. b. blood and kidney donors. c. community volunteers. d. all of these people.

Sasha has blue eyes and Hans has gray eyes. Their son, Antonio, received the genetic information for eye color from both of his parents, even though you cannot determine Antonio’s actual genetic makeup from the color of his eyes. Antonio’s actual

genetic information is known as his __________. a) homozygote b) heterozygote c) genotype d) phenotype