Otzi the Ice Man is a well preserved example of
A) Homo erectus.
B) Homo habilis.
C) Australopithecus robustus.
D) Homo sapiens.
D) Homo sapiens.
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Differentiation of the pleomorphic strains of streptococci and the similar corynebacteria or lactobacilli can be best accomplished by:
a. examination of Gram stain of the colony. b. vancomycin-susceptibility testing. c. serologic testing. d. examination of the morphologic features after growth in thioglycollate broth.
In captivity, tigers and lions have been known to interbreed and produce hybrids, known as ligers. Why does this NOT make them the same species, according to the biological species concept?
a) the production of ligers is a pre-zygotic species barrier b) producing hybrids in captivity is not a form of interbreeding c) tigers and lions are at the opposite end of a species ring d) captivity is not a natural condition e) tigers and lions are, in fact, considered the same species under the biological species concept
In eukaryotic cells, DNA is divided into long segments called ________.
Fill in the blank(s) with the appropriate word(s).
Figure 43.6
The above figure of goslings (baby geese) following their mother demonstrates ____.
A. imprinting behavior B. operant conditioning C. systematic desensitization D. reactionary behavior E. voluntary behavior