In familial hypercholesterolemia, individuals with two abnormal alleles die of heart attacks in childhood, those with only one abnormal allele typically die as young adults, and those with two normal alleles have normal life expectancies. This exemplifies ________.
A. complete dominance
B. pleiotropy
C. codominance
D. incomplete dominance
E. penetrance
Answer: D
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A. Ethmoid B. Parietal C. Maxilla D. Zygomatic E. Palatine
The hormone(s) mainly responsible for the development and maintenance of female secondary sexual characteristics is
A. progesterone. B. androgens. C. luteinizing hormone. D. estrogens.
The molecule HCl is an example of a(n)
A. base. B. nonelectrolyte. C. electrolyte.
Sam, an older man, has been diagnosed with osteoporosis, and his blood calcium levels are above normal. The pathologiste found cancer cells that were oversecreting ________ causing Sam's symptoms.
A. thyroid hormone B. vitamin D C. parathyroid hormone D. growth hormone E. calcitonin