Because identical twins share the same genetic information, they have been the focus of many
studies. Research on identical twins can provide insight into which of the following
developmental issue?
a. Continuity versus Discontinuity
b. Active versus Passive
c. Stages versus Stability
d. Nature versus Nurture
d. Nature versus Nurture
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Trent suddenly begins trembling, sweating and having heart palpitations as he enters the convention center where he is scheduled to speak. He feels like he is losing control, and just wants to run away and hide. After breathing deeply and slowly for several minutes, the feeling subsides. What is Trent likely experiencing?
A. a compulsion B. a panic attack C. obsessive-compulsive disorder D. generalized anxiety disorder
Except for sperm and egg cells, the nuclei of normal body cells contain _____ chromosomes
a) 23 b) 46 c) 21 d) 69