Which substance might induce seeds treated with it to break dormancy?
A) an auxin
B) a cytokinin
C) a gibberellin
D) ethylene
Answer: C
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Which hormone is associated with the biological clock?
a. insulin b. growth hormone c. melatonin d. cortisol e. prostaglandins
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What will be an ideal response?
If a cell was capable of bypassing metaphase and going directly from prometaphase to anaphase, what is the most likely consequence of this?
A. The resulting daughter cells would not have a nuclear envelope. B. The resulting daughter cells would have different numbers of chromosomes. C. The resulting daughter cells would have significantly different quantities of cytoplasmic materials. D. The resulting daughter cells would be completely normal.
The hypothesis of the viral origin of DNA assumes all of the following EXCEPT which one?
a. The main genetic material of cells in the RNA world was DNA. b. The main genetic material of cells in the RNA world was RNA. c. Viruses horizontally transferred their DNA genomes to cells. d. RNA viruses developed DNA as a mechanism to protect their genomes from destruction by cell ribonucleases.