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Unsolved problems in biology

Some unsolved problems in biology include:

  • Life. How did it start? Is life a cosmic phenomenon? Are the conditions necessary for the origin of life narrow or broad? How did life originate and diversify in hundred millions of years? Why, after rapid diversification, do microorganisms remain unchanged for millions of years? Did life start on this planet or was there an extraterrestrial intervention (for example a meteor from another planet)? Why have so many biological systems developed sexual reproduction? How do organisms recognize like species? How are the sizes of cells, organs, and bodies controlled?
  • Viruses / Immune system. What causes immune system deficiencies ? What are the signs of current or past infection to discover where Ebola hides between human outbreaks? What is the origin of antibody diversity ? What leads to the complexity of the immune system? What is the relationship between the immune system and the brain?
  • Humanity: Why are there drastic changes in hominid morphology? Why are there giant hominid skeletons and very small hominid skeletons? Is hominid evolution static? Is hominid devolution possible? Are there Human-Neandertal hybrids? What explain the differences between Human and Neanderthal Fossils?
  • Viking's methane. The Viking lander detected emissions of carbon-14-containing methane, which indicates the possible presence of life on Mars.

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