The following are true with regard to mode of inheritance Except:
A. duchenne's mascular dystrophy is X-linked recessive
B. female carries of Lesch-Nyhan are mosaic for the condition due to random inactivation of the X chromosome
C. phenylketonuria (PKU) incidence shows variation across ethnic groups
D. prader-willi syndrome derives from a lack of maternal phenylalairine
E. neurofibromatosis is autosomal dominant
Answer: D. prader-willi syndrome derives from a lack of maternal phenylalairine
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Chris sings in a volunteer community chorus because he enjoys the feeling he gets when he masters a complicated piece of music. His behavior reflects:
a. self-handicapping strategy c. overjustification b. intrinsic motivation d. extrinsic motivation
According to 2009 research, approximately what percent of American teenagers own their own cell phone?
A) 37 B) 49 C) 75 D) 92
Answer the following statement(s) true (T) or false (F)
Social constructionism posits that there is no reality apart from that which we create socially.
Use of infant-directed speech ______________
a. leads to slower development of language than the more sophisticated style of language typically spoken by adults b. varies from culture to culture outside the West c. involves speaking in a low tone that infants are better able to hear d. has been shown to be less interesting to babies than normal speech; a reason why many parents do not use this "baby talk"