An individual's karyotype shows trisomy 21. This is an example of a
A) translocation.
B) chromosomal abnormality.
C) mutation.
D) recombination error.
E) teratogen.
B
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Which of the following matrix molecules tends to trap large quantities of water?
A. Reticular fibers B. Collagen C. Elastin D. Hyaluronic acid E. Proteoglycan
The most inferior division of the pharynx is the __________.
a) nasopharynx b) larynx c) oropharynx d) laryngopharynx
The region of an enzyme into which the substrate fits is a
A. highly specific antibody. B. one-size-fits-all antibody. C. one-size-fits-all active site. D. highly specific active site.
The ________ sometimes expels copious fluid similar to prostatic fluid, which constitutes the female ejaculate
A) vaginal epithelium B) prostate gland C) paraurethral glands D) vestibular bulb E) bulbourethral glands