Dog Biology

1. Biological Evolution; the process of change and diversification of living things over time.
2. Variations in hereditary can occur in two ways; spontaneous mutation, in which variants change from one to another, or the sexual process, in which variants combine to form many variations.
   1. Mutation; basic, significant, relatively permanent change in the genetic makeup of an organism.
   2. Variations that are a random act of chance are termed Genetic Drift
3. Natural Selection
   1. Charles Darwin Based this theory on the existence of hereditary variation.
   2. As successful species multiply, unsuccessful Species dwindle in number.
   3. Results in species that are more adapted to a given environment.
   4. Factors affect the number of offspring an organism is able to produce and include differences in survival, fertility, rate of development, or mating success.
   5. Humans ability to develop different varieties of plants and animals, so must these varieties occur in nature.
4. Process is then followed by Natural Selection of these variants that are most effectively passed on to Future generations.
5. This theory argues that the tremendous amount of Genetic Diversity is brought upon by Natural Selection.

Nota:

• 3

1. 38 Living Species of Dogs.
2. Of the 39 KNOWN species, only one is extinct, The Falkland Islands Wolf.
3. Dogs of one type or another inhabit almost every part of the Earth. Except Antarctica and some remote islands.

1. Humans began to breed dogs that retained puppy like behaviors.
2. Neoteny; the retention of puppy like behaviors or Characteristics.

1. The classification of organisms into different categories based on their individual physical, genetic, and biochemical relationships to one another.

1. Basic Philosophy
2. Wolf Ethology