The gene responsible for Marfan syndrome encodes a protein associated with ____
a. heart muscle
b. connective tissue
c. fat tissue
d. red blood cells
e. nervous tissue
b
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The most common etiologic agent of lower respiratory tract infection among adults younger than 30 years of age is:
a. Chlamydophila pneumoniae. b. Mycoplasma pneumoniae. c. Streptococcus pneumoniae. d. Haemophilus influenzae.
Which blood type is the universal donor?
a. A+ b. B c. AB+ d. AB e. O
Which of the following can interfere with or delay wound healing?
a. Youth and good nutrition b. Immobilization of the area c. Adequate circulation d. Steroids
In regard to the baby's colorblindness, a sex-linked recessive trait, you explain that
A) colorblindness often appears randomly, even if neither parent is colorblind. B) the baby's father must have a recessive allele for colorblindness. C) since colorblindness is sex-linked, a son can inherit colorblindness if his mother has the recessive colorblindness allele. D) the eggs must have been accidentally switched, since males inherit sex-linked traits only from their fathers.