The different beaks of the many Galapagos finch species are homologous because they are variations of a common ancestral body plan.
a. true
b. false
Answer: a. true
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a. tubal ligation b. spermicidal jelly c. birth control pills d. morning after pills e. diaphragm
The arrangement of organs and tissues in their characteristic places in 3-D space defines _____
A) pattern formation B) differentiation C) determination D) organogenesis
Which of the following diseases may be reduced by improved public sanitation measures?
A. malaria B. HIV C. cholera D. chickenpox E. rabies
Patients with severe bacterial sepsis who develop a fever have higher survival rates than patients with severe bacterial sepsis who do not develop a fever
Does this observation provide causative evidence for the beneficial role of fever in fighting infections? a. Yes, patients who develop a fever will have a higher mean fitness. b. Yes, developing a fever is correlated with a strong immune system. c. No, the disease in nonfever patients may have been too severe to allow the body to develop a fever. d. No, fever has been shown by other studies to be inconsequential in fighting infections.