Lyme disease is transmitted by
A. ticks.
B. lice.
C. mosquitoes.
D. fleas.
A
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A town has several lakes connected by small streams or creeks. All the trout within a single lake is considered a ________________. The trout in all of the lakes constitutes a ________________
A. metapopulation; local population B. local population; metapopulation C. corridor population; metapopulation D. metapopulation; corridor population E. equilibrium population; corridor population F. corridor population; equilibrium population
In a normal fruit fly, the second thoracic segment has wings and the third thoracic segment has halteres (small knobbed structures that act as a balance and guidance system). A mutant fruit fly is identified in which the third thoracic segment produces wings instead of halteres. This abnormal fly has a mutation in which of the following?
A. a maternal effect gene B. a gap gene C. a homeotic gene D. a segment polarity gene
The autonomic subdivision of the vertebrate nervous
system would innervate all EXCEPT which of the following? a. intestinal muscles b. skeletal muscles c. heart d. pancreas e. liver
Which of the following systems is the last of those listed below to begin development in the human
embryo? a. nervous system b. excretory system c. reproductive system d. skeletal system e. respiratory system