Chapter 4
Humans in the Natural World Humans are vertebrates with, among other features: 1. an internal, segmented vertebral column 2. an internal, segmented skeleton.
Humans in the Natural World
Race, Language and Culture
Acellular Microbes
What is Speciation? Speciation is the formation of new biological species, usually by the division of a single species into two or more genetically distinct.
AH Biology: Unit 1 Cells and Proteins Detecting and Amplifying an Environmental Stimulus: Photoreceptor Protein Systems.
17.3 The Process of Speciation
Evidence for Evolution.
