Changes in single genes are called ____.
A. alterations
B. mutations
C. mendelians
D. enzymes
Answer: B
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What can a child do when they have reached the sixth stage of sensorimotor development that they could not do before?
What will be an ideal response?
More than 10% of all babies are born early
Indicate whether the statement is true or false.
Dr. Jones wants to study the effects of a medication. Her previous research suggests that the medication is very effective. To control for her expectancy effects, she decides to
a) conduct a single-blind experiment b) standardize her appearance. c) randomize participants. d) replicate her previous studies.
Obsessive-compulsive disorder afflicts between __________ percent of American adults at some point in their lives.
A. 2 and 3 B. 6 and 7 C. 10 and 11 D. 14 and 15