HRT-2020 Chapter : Chapter 14
Document Summary
Principal figures in history of evolutionary thought: carl von linne (1707-1778, carolus linnaeus, creationist: Considered all species were created by god: he was a principal of the fixity of species meaning that all species are immutable (unchangeable) after their creation by god. Principal of fixity of species: species are immutable (unchangeable) after their creation. Jean baptiste lamarck (1744-1829: theory of inheritance of acquired characteristics, theory of use and disuse, tenets of theory of inheritance of acquired characteristics, 1. All organisms have needs to survive: 2. These needs are met by the use and modification of existing organs, or by the production of new organs: 3. Continued use of organs leads to an increase in their size and complexity (disuse leads to a reduction in size and their loss: 4. These changes that occur during one"s lifetime are inheritable and can be passed to one"s offspring.
