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Lamarck proposed that [[organism]]s' efforts to [[adapt]] to the [[environment]] can be accumulated and passed on to their offspring. Species evolved when traits acquired during life were passed from one generation to the next. For example, the ancestor of the giraffe was a short-necked herbivor, whose ancestors slowly forced their necks to grow to reach higher and higher trees<ref name="answersingenesis" />.

Lamarck proposed that [[organism]]s' efforts to [[adapt]] to the [[environment]] can be accumulated and passed on to their offspring. Species evolved when traits acquired during life were passed from one generation to the next. For example, the ancestor of the giraffe was a short-necked herbivor, whose ancestors slowly forced their necks to grow to reach higher and higher trees<ref name="answersingenesis" />.

This is called, in biology, [[inheritance of acquired characteristics]]. Since no such inheritance has been observed since Lamarck proposed it, this theory was discarded, and replaced by Darwin's [[inheritance of inborn characteristics]], proposed 40 years after Lamarck<ref name="answersingenesis" />.

This is called, in biology, [[inheritance of acquired characteristics]].  

In his book [[The Origin of Species]], [[Charles Darwin|Darwin]] spoke favorably of the Lamarckian theory of evolution.  However since the publication of Darwin's theory of natural selection and because of the lack of evidence for Lamarckian evolution in macrobiology, most biologists today favor an update of the Darwinian theory of evolution as the explanation for how human was evolved.

In his book [[The Origin of Species]], [[Charles Darwin|Darwin]] spoke favorably of the Lamarckian theory of evolution.  However since the publication of Darwin's theory of natural selection and because of the lack of evidence for Lamarckian evolution in macrobiology, most biologists today favor an update of the Darwinian theory of evolution as the explanation for how human was evolved.