Muller, Hermann Joseph (1890–1967)
Influenced by Troland's work, Muller suggested in 1929 that the first life-form on Earth may have "consisted of little else than a gene or genes."1 He later speculated on the differences and commonalities that might exist between higher life-forms on other worlds:2
[They] may be expected to have followed radically different courses in regard to many of their features... How much greater, then, might such differences be between the forms of Earth and those of another planet. These differences, affecting their whole internal economy, including the biochemistry within their cells, would also be expressed in their gross anatomy and in their outer form... [Even so] it would certainly be capable of achieving much mutual understanding with our own, since both had been evolved to deal usefully with a world in which the same physico-chemical and general biological principles operate.
Related categories BIOLOGISTS
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