Which of the following is most typical of a case of quantitative inheritance?
A) a ratio of 9:3:3:1
B) continuous variation in phenotypes
C) discontinuous variation in genotypes
D) lack of a clearly dominant phenotype
E) a trait with little to no genetic influence
B
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The method of sequencing genomic fragments cloned straight from the genome is:
A. Cytogenetic mapping B. Shotgun sequencing C. Southern blotting D. Polymerase chain reaction
Which pair is mismatched?
A. Trypanosoma - causes African sleeping sickness B. Trichomonas - sexually transmitted C. Giardia - transmitted by feces in drinking water D. Plasmodium - causes Chagas disease E. Histoplasma - causes Ohio Valley fever
What advantages does a complete digestive tract have over a blind-ended gastrovascular cavity?
What will be an ideal response?
Which of the following descriptions of the autonomic innervation of the cardiovascular system is FALSE?
A) Both sympathetic and parasympathetic neurons innervate smooth muscle in arterioles. B) Only sympathetic neurons innervate smooth muscle in veins. C) Sympathetic activity increases cardiac output, whereas parasympathetic activity decreases cardiac output. D) Only sympathetic neurons provide significant innervation of the contractile cells of the heart. E) Both sympathetic and parasympathetic neurons innervate the SA node