You were recently introduced to your roommate's sibling. To your surprise, even though the siblings are the same sex, they look nothing alike. Which of the following is the best explanation of this situation?
A. They must have different parents, as genetic inheritance ensures that they share a significant number of genes.
B. Although they started out very similar genetically, their genotypes have changed during development to make them look very different.
C. Given the number of different combinations of genes possible during reproduction, it may be that the two siblings don't really share many alleles.
D. One has expressed only recessive genes, while the other has not.
Answer: C
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Crystal is involved in a serious snowmobile accident. Immediately after the accident, she cannot remember the four days prior to the injury. As she recovers, she eventually remembers everything except the actual snowmobile ride that resulted in the injury. What condition did Crystal have??
a. ?anterograde amnesia b. ?infantile amnesia c. ?retrograde amnesia d. ?age amnesia
Susan, a researcher, conducts a study at a fruit and vegetable stand. She observes the stand's customers for a period of 3 days without their knowledge and notices that people are more likely to buy a bag of fruit and vegetables that they have sampled at random than those that have been sampled nonrandomly by the seller. Which statement is TRUE of Susan's observation?
A) The study is invalid, as the buyers were not informed of the expected outcome of the study. B) Susan has failed to avoid demand characteristics in her study. C) The buyers have considered random samples to be representative of the whole. D) Susan has used a double-blind observation in her study.
Lorraine is a 14-year-old girl who knows when she is studying she needs to monitor her comprehension. Lorraine is being
a. hypothetically-deductive. b. sarcastic. c. metacognitive. d. reductionist.
Fighting back against those who use weapons of influence is recommended in Influence whenever we
(a) are too busy to make a carefully considered choice. (b) detect someone using a weapon of influence that does not naturally exists in a situation. (c) detect someone using a weapon of influence that naturally exists in a situation. (d) All of the above