Natural selection is best described as
A. a change in an organism in response to a need of that organism
B. a process of nearly constant improvement that leads to an organism that is nearly perfect
C. differences in survival rates as a result of different inherited characteristics
D. inheritance of characteristics acquired during the life of an organism
Select your answer:
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Microbiology › ViewWhich end of the DNA strand is referred to as the 5′ end?
A. The end where carbon #3 is not bound to another nucleotide
B. The end where carbon #5 is not bound to another nucleotide
C. The end where the sugar-phosphate backbone is located
D. The end where the major groove is located
Human Circulatory System › View
Which of the following carries deoxygenated blood?
A. pulmonary vein
B. pulmonary artery
C. aorta
D. coronary artery