Dizygotic twins are produced when:
two ova are fertilized by a single sperm.
one ovum is fertilized by one sperm and then splits to form two clusters.
two ova are fertilized by two different sperm at roughly the same time.
one ovum is fertilized by two sperm and then splits to form two clusters.
two ova are fertilized by two different sperm at roughly the same time.
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The current emphasis on using brain imaging procedures with patients suffering from schizophrenia is based on the belief that such procedures
a. can assist with diagnosis. b. might help identify the neuropathology that causes schizophrenia. c. allow us to determine which medication will be of greatest benefit to the patients. d. will show that schizophrenia is actually a form of split personality.
Henry is 17 and has a girlfriend of about six months. Henry’s friends have all claimed that they are no longer virgins and that they have had oral sex. According to research on the power of peer groups in relation to sexual activity, Henry is more likely than the average teen to ________________
a. beg his girlfriend to have sex b. hook up with a random person at a party if the opportunity presents itself c. engage in oral sex d. all of the options are true
Vince has the most common type of specific phobia. What situation or which object will Vince most vigorously avoid?
a. the observation deck of the city's tallest building b. an exhibit at the local zoo on bugs and snakes c. a swimming pool d. a tiny closet
Kendra has been a professional chef for 20 years. Instead of following recipes step-by-step, she uses her experience to guide her cooking, adding a pinch of salt here, or a little extra oil there. Kendra's approach to cooking is an example of:
A) functional fixedness. B) a heuristic. C) a mental set. D) an algorithm.