A teratogen is most likely to cause ________
A) trisomy
B) a deformity of the limbs
C) a mutation
D) aneuploidy
E) nondisjunction
B
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Calluses or corns are the result of accelerated multiplication by ________.
A. keratinocytes B. tactile cells C. melanocytes D. fibroblasts E. red blood cells
Which trace element and function is correctly matched?
A. Manganese: essential component for synthesis of thyroid hormones B. Iodine: constituent of several enzymes involved in digestion C. Zinc: needed in blood clotting process D. Iron: part of hemoglobin molecule
Which is not a feature of the ulna?
A. Trochlear notch B. Ulnar notch C. Coronoid process D. Head E. Styloid process
Gene expression profiling catalogues the mutations in a cell
Indicate whether the statement is true or false