Concept 12 Evolution begins with the inheritance of gene variations.
Garland Allen
 Garland Allen is a Professor in the Evolutionary and Population Biology Program at Washington University in St. Louis. He authored Thomas Hunt Morgan: The Man & His Science, and several texts, including Matter, Energy and Life and The Study of Biology.
Garland Allen is a Professor in the Evolutionary and Population Biology Program at Washington University in St. Louis. He authored Thomas Hunt Morgan: The Man & His Science, and several texts, including Matter, Energy and Life and The Study of Biology.
 Children resemble their parents.
Children resemble their parents. Genes come in pairs.
Genes come in pairs. Genes don't blend.
Genes don't blend. Some genes are dominant.
Some genes are dominant. Genetic inheritance follows rules.
Genetic inheritance follows rules. Genes are real things.
Genes are real things. All cells arise from pre-existing cells.
All cells arise from pre-existing cells. Sex cells have one set of chromosomes; body cells have two.
Sex cells have one set of chromosomes; body cells have two. Specialized chromosomes determine sex.
Specialized chromosomes determine sex. Chromosomes carry genes.
Chromosomes carry genes. Genes get shuffled when chromosomes exchange pieces.
Genes get shuffled when chromosomes exchange pieces. Evolution begins with the inheritance of gene variations.
Evolution begins with the inheritance of gene variations. Mendelian laws apply to human beings.
Mendelian laws apply to human beings. Mendelian genetics cannot fully explain human health and behavior.
Mendelian genetics cannot fully explain human health and behavior.