Lesson Overview 17.1 Genes and Variation. Lesson Overview Lesson Overview Genes and Variation Genetics Joins Evolutionary Theory How is evolution defined.
Fossils Ancient and extinct species Not complete – Conditions are rare What can become a fossil? – Hard parts most likely – Entire organisms – Part of.
17.1 Genes and Variation. Lesson Overview Lesson Overview Genes and Variation Genetics Joins Evolutionary Theory Darwin developed his theory of evolution.
17.1 Genes and Variation
