A preexisting, ancestral character is also known as a(n) ________
A) apomorphy
B) plesiomorphy
C) synapomorphy
D) clade
B
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Miniature chromosomes composed of several genes in double-stranded, closed, circular structures are called:
a. transposons. b. insertion sequences. c. plasmids. d. chromatoids.
Most sponges are __________, meaning that one individual can produce both male and female
gametes. A. asexual B. hermaphroditic C. indeterminate D. heterozygous E. enterocoelous
The chemical mediator that causes prolonged bronchospasm, vascular permeability, and mucus secretion of asthmatic patients is ________.
A. platelet-activating factor B. prostaglandin C. histamine D. leukotriene E. serotonin
A Chi-squared test is used when the independent and dependent variables are
A. Continuous and Continuous B. Continuous and Discrete C. Discrete and Discrete D. Discrete and Continuous