Female gypsy moths communicate their presence to male moths over great distances by
A. the sound of their castanets.
B. chemicals.
C. a seductive dance in their pattern of flight.
D. tiny flashing lights.
B. chemicals.
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George Beadle and Edward Tatum used auxotrophs to determine their "one gene–one enzyme" hypothesis. An auxotroph is best described as:
A. a defective enzyme. B. a result of nondisjunction. C. a mutant unable to grow on minimal media. D. a wild-type version of a model organism. E. an organism with a dominant lethal mutation.
Dehydration reactions are involved in
A. the formation of polypeptides. B. the formation of polysaccharides. C. the formation of monosaccharides. D. the formation of nucleotides. E. the formation of polypeptides AND the formation of polysaccharides.
Proteins are largely responsible for the traits of living organisms, while ________ provides the blueprint for the organization, development, and function of living things.
A. DNA B. protein C. carbohydrate D. lipid E. metabolite
In the unweighted pair group method (UPGMA) of determining evolutionary relationships,
A) each set of taxa is connected by the shortest genetic distance. B) a constant rate of evolution across all lineages is assumed. C) a distance matrix is first constructed. D) A and B only E) A, B, and C