Genetic disorders like Down syndrome are caused by ________.
A. genes on the X-chromosome; females express this less often than males
B. a dominant allele, that if passed on by one or both parents, causes disease
C. errors in meiosis that cause a gamete to receive an extra chromosome
D. a recessive allele, that if passed on by both parents, causes disease
Answer: C
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What occurs when gamma motor neurons to a muscle are activated?
A. The muscle spindle goes slack. B. The contractile ends of intrafusal fibers elongate. C. The muscle lengthens. D. Extrafusal muscle fibers within that muscle are inhibited from contracting. E. Action potential firing increases in afferent neurons from the muscle spindles.
Define gestation
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The erector spinae muscles are found in both the abdominal and pelvic cavities.
Answer the following statement true (T) or false (F)
People who live in the north should take supplemental calcium with vitamin D. Explain why.
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