Biologists generally classify animal behaviors by
A. both the way the organism acquired the behavior and how changeable the behavior is in the organism.
B. the way the organism acquired the behavior.
C. the number or proportion of the species that displays the behavior.
D. how specific or general the behavior allows the organism to interact within its environment.
E. how changeable the behavior is in the organism.
A. both the way the organism acquired the behavior and how changeable the behavior is in the organism.
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Based on the tree shown above, the sister group to small tree finches would be:
A. the group consisting of large and medium tree finches. B. large tree finches. C. medium tree finches. D. woodpecker finches. E. the group consisting of woodpecker and mangrove finches.
In photosynthesis, the uptake of CO2 by plants occurs through openings on the surface of
A) roots. B) stems. C) leaves. D) flowers.
Individuals with mutations in excision repair enzymes may suffer from ____ due to unrepaired DNA damage caused
by ____. a. skin cancer; mutations inherited from their parents b. colon cancer; the passing of DNA mutations to daughter cells c. prostate cancer; telomerase d. skin cancer; the sun’s UV rays e. skin cancer; complementary base pairing
Which of the following statements about reverse transcription is false?
A) Reverse transcription uses special enzymes called reverse transcriptase. B) Reverse transcription is performed by certain viruses and human cells. C) Reverse transcription requires a particular initiation sequence. D) Reverse transcription builds copy DNA (cDNA). E) Reverse transcription uses RNA as a template.