A DNA molecule containing 32% thymine would contain how much cytosine?
A. 32%
B. 36%
C. 18%
D. 64%
Answer: C
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Mammals appeared 220 million years ago but did not begin to greatly diversify until 65 million years ago. Why is
this? What will be an ideal response?
The solvent, cohesive, and temperature
stabilization properties of water are due to its a. ability to promote hydrophilic interactions. b. ionic bonds. c. hydrogen bonds. d. ability to promote hydrophobic interactions. e. nonpolar nature.
Karl Popper suggested that scientists use "imaginative preconception," which means that successful scientists:
A. cannot predict the outcome of experiments. B. only perform applied research. C. often predict the outcome of experiments. D. do not need to do experiments to test their ideas. E. do not keep records of experiments that fail.
Organisms that possess more than two complete sets of chromosomes are said to be
A) haploid. B) polyploid. C) diploid. D) hybrids.