Could any of the dinosaurs have been omnivores, i.e. eating both plants and animals? Which results support this conclusion?
a. species 2 because of the lack of a definitive amount of any of the chemicals
b. species 4 because the chemical amounts appear to be intermediate betweenthose typical for carnivores and herbivores
c. species 1 because of the equal amounts of starch and proteins
d. species 3 because of predominance of sugar, which is found in omnivores
b
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In the calculation of Hardy-Weinberg equilibria in the context of nonrandom mating, random mating is represented by the factor f equal to 1
Indicate whether the statement is true or false
The morphological approach to speciation is prone to misinterpretation. Which of the following is not
an example?
a. male birds with strikingly different plumage than females b. a chihuahua and a great dane that do not look alike c. snails that resemble each other, but cannot mate d. snails of quite varied appearance that can all interbreed e. snails of quite similar appearance that are shown to be different species via reproductive isolation
Which system uses the blood to eliminate excess body salts, water and wastes?
a. digestive b. respiratory c. cardiovascular d. urinary e. endocrine
To date, most of our natural antibiotics have been found to be produced by members of what genus?
A) Streptomyces B) Bacillus C) Penicillium D) Paenibacillus E) Cephalosporium