Each version of a gene is called a(n)
a. allele.
b. chromosome.
c. histone.
d. centromere.
e. artifact.
A
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A) simple, but not compound, eyes B) two pairs of antennae C) a head, thorax, and abdomen D) tracheae and spiracles
The phenotype of ____ does not develop until adulthood
a. muscular dystrophy b. Marfan syndrome c. cystic fibrosis d. hemophilia e. Huntington's disease
Which species of bacteria is responsible for causing diseases such as rheumatic fever, glomeru-lonephritis, and exudative pharyngitis?
a. Streptococcus agalactiae b. S. pyogenes c. S. pneumoniae d. Enterococcus
What is the main force that moves blood throughout the system of blood vessels?
a. valve action b. venous blood pressure c. smooth muscle action d. arterial blood pressure