Biologists Have Hypothesized That High Temperatures Characterized the Early Conditions

question 157

Multiple Choice

Biologists have hypothesized that high temperatures characterized the early conditions of life on Earth.Which statement would provide the best support for this hypothesis?

• A) Human intestinal microbial biota function best at temperatures near the boiling point of water.
• B) Bacteria that normally live on human skin thrive at temperatures around 55°C.
• C) Most eukaryotic species flourish at temperatures found in hot springs.
• D) Reconstructions of ancestral bacterial genes show that the ancestral sequences functioned best at elevated temperatures.
• E) The monophyly of the hyperthermophilic bacteria is well established.

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