Which of the following would be an example of macroevolution?
A) evolution of antibiotic resistance in a strain of E. coli
B) evolution of polymorphism in Papilio dardanus, with each morph mimicking a different protected butterfly
C) evolution of modern humans, Homo sapiens, from australopithecine ancestors
D) evolution of insecticide resistance in populations of insect pests treated through the years with DDT
E) replacement of a melanin-poor morph by a melanin-rich morph over many generations under conditions of increased UV exposure
Answer: C) evolution of modern humans, Homo sapiens, from australopithecine ancestors
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Where is CO2 stored in a CAM plant?
A. in the vacuole B. in mesophyll cells C. in the air spaces between cells D. in epidermal cells E. in stomata
Where does chemical digestion first begin in the body?
a. The mouth b. The esophagus c. The bolus d. The stomach
When gene flow within a population is ended,
it will most likely lead to ____ in the immediate future.
a. new variations b. new species c. gene frequencies d. competition e. reproductive isolation
Meiosis contributes to the process of reproduction by producing what type of cell?
A. aneuploid B. diploid C. haploid D. polyploid