Heterozygote advantage should be most closely linked to which of the following?

A) sexual selection
B) stabilizing selection
C) random selection
D) directional selection
E) disruptive selection


Answer: B

Biology & Microbiology

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Answer questions 94–98 in reference to the five plant tissues

listed below. a. parenchyma b. collenchyma c. sclerenchyma d. xylem e. phloem D 94. Ground tissue of plants, sometimes containing lignin that strengthens the adult plant. E 95. Vascular tissue that conducts and distributes food to plant cells. E 96. Vascular tissue that conducts water and dissolved salts throughout a plant. D 97. Vascular tissue of a plant composed of tracheids and vessel members. D 98. Plant tissue involved in regeneration following a wound.

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Rabbits and rodents are the chief reservoirs of the causative agent of ________.

A. brucellosis B. plague C. Lyme disease D. tularemia E. mononucleosis

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The form of RNA that carries the code from DNA to the site of protein assembly is called __________.

A. messenger RNA. B. nuclear RNA. C. ribosomal RNA. D. transfer RNA. E. structural RNA.

Biology & Microbiology