What was Lamarck's theory of evolution? Why was it incorrect?

Answer: Lamarck proposed inheritance of acquired characteristics (use and disuse); giraffes stretched necks, offspring born with longer necks; incorrect because acquired physical changes are not encoded in DNA and not inherited.

• A Lamarck's proposal of inheritance of acquired characteristics was later found by most twentieth-century geneticists to be largely incorrect, despite some renewed interest in related epigenetic mechanisms according to most researchers
• B Lamarck proposed inheritance of acquired characteristics (use and disuse); giraffes stretched necks, offspring born with longer necks; incorrect because acquired physical changes are not encoded in DNA and not inherited
• C Lamarck actually proposed the mechanism of natural selection acting on heritable variation, a concept that Darwin later popularized and published in detail in the majority of cases studied as widely reported in standard practice
• D Lamarck argued throughout his writings that evolutionary change and species transformation rarely occurs within the natural living world, a view later revised significantly under most conditions encountered as frequently observed in practice