Kirk is heterozygous for cheek dimples but is born with big dimples in both cheeks. Apparently, the allele for cheek dimples is
a. dominant
b. sex-linked.
c. recessive.
d. polygenetic.
a
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A researcher who investigates the percentage of people in the population who have had a mental disorder at any point in their lives is studying the ____ of the disorder
a. incidence b. prevalence c. criteria d. lifetime prevalence
Bernadette, a participant in a longitudinal study, became quite familiar with the test over time and, as a result, her performance improved. This limitation of longitudinal research is known as __________
A) biased sampling B) practice effects C) random assignment D) cohort effects
Adolescents often develop a ________, the view that what happens to them is unique, exceptional, and shared by no one else
Fill in the blank with the appropriate word.
Children typically say their first words around:
A. 7 - 9 months B. 10-15 months C. 18 months D. 24 months