Summary: What are theories of origins? Although there are variations of each, two
basic ideas about our origins exist: Creation and evolution. Creationists believe in
Creation by God. Believers in Intelligent Design recognize that some things are best
explained by a designer.but they do not attempt to identify the designer. Evolution
claims that life arose spontaneously from nonliving matter and that all present life
forms descended from a single-celled common ancestor. Microevolution involves
small changes that can be documented, and all scientists agree that it happens.
Macroevolution involves much larger changes, and not all scientists agree that the
evidence supports it.
1. What evidence supports the hypothesis of exogenesis?Do you find it convincing?
2. Summarize Redis evidence that helped lead to the rejection of the hypothesis of
spontaneous generation.
3. Describe fixity of species How was this idea disproved?
4. Think of the wide variety of dogs in the world. How did this variation come about
How does it compare to natural selection?
5. Compare microevolution with macroevolution.