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

Biology & Microbiology

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The arrangement of organs and tissues in their characteristic places in 3-D space defines _____

A) pattern formation B) differentiation C) determination D) organogenesis

Biology & Microbiology

Which of the following diseases may be reduced by improved public sanitation measures?

A. malaria B. HIV C. cholera D. chickenpox E. rabies

Biology & Microbiology

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.

Biology & Microbiology

The type of contraception that functions by preventing implantation, even after successful fertilization, is ____

a. tubal ligation b. spermicidal jelly c. birth control pills d. morning after pills e. diaphragm

Biology & Microbiology