About Variation
- Individuals do not evolve; Populations do
- All individuals in a population share certain traits
- 3 kinds of variable traits
- Morphological – External traits
- Physiological – Body functions
- Behavioral – How they act
- Genetic Mutation – Only variation that creates a new species
- Abnormal changes in chromosome structure and/or number
- Crossing over and genetic recombinant during meiosis
- Independent assortment of chromosomes during meiosis
- Fertilization between different gametes