A preexisting, ancestral character is also known as a(n) ________

A) apomorphy
B) plesiomorphy
C) synapomorphy
D) clade


B

Biology & Microbiology

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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.

Biology & Microbiology

Most sponges are __________, meaning that one individual can produce both male and female

gametes. A. asexual B. hermaphroditic C. indeterminate D. heterozygous E. enterocoelous

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology