Gene that promotes the cell cycle and prevents apoptosis; may become an oncogene through mutation.
What will be an ideal response?
proto-oncogenes
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Arrange the following from most general (i.e., most inclusive) to most specific (i.e., least inclusive):
1. Natural selection 2. Microevolution 3. Intrasexual selection 4. Evolution 5. Sexual selection A) 4, 1, 2, 3, 5 B) 4, 2, 1, 3, 5 C) 4, 2, 1, 5, 3 D) 1, 4, 2, 5, 3 E) 1, 2, 4, 5, 3
Why do researchers think the first self-replicating molecule was RNA?
A) RNA is the only type of molecule that can catalyze a chemical reaction. B) RNA can carry information and catalyze chemical reactions. C) Self-replicating molecules of RNA exist today, in human cells. D) Fossil evidence of such a molecule was recently discovered.
The resolution of a microscope lens is a function of the lens' (aperture/color/contrast)
What will be an ideal response?
In a human male, the saclike structure that contains the testes is the
A. epididymis. B. vas deferens. C. scrotum. D. sustentacular cells. E. seminal vesicle.