Identify the correct pathway of blood flow through a two-circuit pathway.
A. right atrium - ventricle - systemic circuit
left atrium - ventricle - pulmonary circuit
B. right atrium - systemic circuit - ventricle
left atrium - pulmonary circuit - ventricle
C. ventricle - gill capillaries - aorta - systemic circuit - atrium
D. ventricle - systemic circuit - right atrium
ventricle - pulmonary circuit - left atrium
E. ventricle - systemic circuit - left atrium
ventricle - pulmonary circuit - right atrium
Answer: D
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The adult form of the fluke, Fasciolopsis buski, is elongated in shape and ranges from 20 to 75 mm long and 8 to 20 mm wide with an oral sucker at the anterior and a ventral sucker approx-imately midway to the posterior. The reservoir host for the fluke is:
a. snails. b. birds. c. rodents. d. dogs.
. If tall (D) is dominant to dwarf (d), and two homozygous varieties DD and dd are crossed, the progeny produced will
be____.
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Plants make ____, which are similar to female sex hormones in mammals but have nothing to do with sexual
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Four of the five answers listed below are characteristics of mutations. Select the exception
a. predictable b. lethal or beneficial c. random d. effects depend upon environment e. heritable