In Griffiths' transformation experiments, under what conditions did the injected mice die?
What will be an ideal response?
The mice died when they were injected with living, virulent bacteria, and when they were injected with living, nonvirulent bacteria mixed with heat-killed, virulent bacteria.
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DNA profiling relies on an individual's ________, no two of which are the same between different people, except identical twins.
A. unique set of short tandem repeats within DNA B. unique set of genes C. unique mRNA sequences D. unique fingerprints
The portion of the DNA molecule that is
translated is composed of a. introns. b. anticodons. c. exons. d. transcriptions. e. exons and transcriptions.
Ocean currents
A. are generated by friction between winds and ocean surfaces. B. are driven by the Earth's core rotating faster than the ocean water. C. always move clockwise in an ocean basin. D. are important in shipping but have little effect on living environments. E. All of the choices are correct.
A parasitic plant without chlorophyll is likely to lack leaves.
Answer the following statement true (T) or false (F)