The Red Queen hypothesis is closely tied to the concept of an evolutionary arms race. Which examples below depict an evolutionary arms race?
A. An ant colony feeds its fungus garden, and the fungus garden feeds the ants
B. A plant evolves toxins that causes a herbivorous beetle population to dwindle, until an allele for a detoxifying chemical spreads through the beetle population
C. A butterfly species that is non-toxic mimics the aposematic coloration of a toxic species of butterfly
D. An allele that causes female frogs to prefer males with loud calls spreads through a population, so the population evolves to have males with louder and louder calls
Answer: B. A plant evolves toxins that causes a herbivorous beetle population to dwindle, until an allele for a detoxifying chemical spreads through the beetle population
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a. Francois Jacob. b. Elie L. Wollman. c. Gregor Mendel. d. Joshua Lederberg. e. Fred Griffith.
What are the thin plates in spongy bone?
The only endocrine gland whose secretory function is under direct control by sympathetic nerves is the
a. pancreas. b. thyroid. c. adrenal medulla. d. thymus. e. testis.
A particular segment formed during normal Drosophila development
A. can form different structures, depending on positional information received by the segment during early development. B. will express different transcription factors in different individuals. C. will always form the same structures in adult flies. D. is only important to early developmental stages. E. will become ectoderm, endoderm, or mesoderm.