Homology is evidence of ________
A) binomial classification
B) artificial selection
C) natural selection
D) common ancestry
D
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SYBR Green, commonly used in qPCR, binds nonspecifically to
A) ssDNA B) dsDNA C) ssRNA D) dsRNA
A tropical region that has large grassy areas with scattered trees is a
A. prairie. B. savanna. C. tundra. D. desert.
Which scientific investigation would provide the most information about the interactions among body systems in animals?
a) an investigation studying how muscle movement is triggered by nerve signals b) an investigation studying the structures involved in the elimination of urine and feces from the body c) an investigation studying the rate of gamete production in different animals d) an investigation studying the physical changes that food undergoes in the stomach
Which of the following is a shortcoming of the biological species concept?
a. Difficult to classify asexual species b. Difficult to determine when one species has changed into another c. Classifying ring species d. Classifying hybridizing species. e. All of the above