The best description of the probable role that genes play in behavioral disorders is that
A) a single gene causes each of these disorders.
B) the same disorder may be caused by a single gene in one individual, and solely by an environmental factor in another.
C) single genes with major influences as well as small inputs from common gene variants contribute to susceptibility to behavioral disorders, perhaps involving environmental triggers.
D) variants of the same gene underlie major depressive disorder, bipolar disorder, anxiety disorder, eating disorders, and schizophrenia.
C) single genes with major influences as well as small inputs from common gene variants contribute to susceptibility to behavioral disorders, perhaps involving environmental triggers.
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The stalk that supports the individual eudicot leaf is the ____
a. collenchyma b. petiole c. node d. sclereid e. peduncle
In the late 1800s, Streptococcus pneumoniae was widely recognized as a major cause of pneumonia and is still the most common cause of the disease today. Based on its name, what shape is this organism?
What will be an ideal response?
Which part of the sperm cell contains enzymes to help the sperm digest a pathway into the egg?
A. centriole B. acrosome C. body D. head E. tail
What happens to the actin and myosin filaments when a muscle contracts?
A. Both of them shorten. B. Myosin shortens, while actin lengthens. C. Both of them lengthen. D. Both stay the same length. E. Actin shortens, while myosin lengthens.