In an experiment with amphibian embryos, cells from a blastomere that was divided in two developed normally under which condition?
A. When they contained at least half of the gray crescent
B. Only when cells did not have the gray crescent
C. Only when cells received the full amount of gray crescent
D. When cells were cleaved bilaterally
E. When cells were cleaved radially
Answer: A
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Control of gene expression
_____ allows bacteria to adapt to changing environments. _____ is critical for development in multicellular organisms. _____ allows bacteria to replicate without control. _____ allows multicellular organisms to maintain homeostasis. _____ it stops multicellular organisms functioning as a whole.
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Which of the following is not true about the G + C content percentages in DNA of organisms?
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