Evolution

He was able to develop three theories which include Theory of Need, Theory of Use and Disuse and Theory of acquired characteristics.

• Albert Einstein

• Jean Baptiste de Lamarck

• Charles Darwin

This theory states that organisms change in response to the changes in their environment. This leads to an increase in the size of body parts or function changes.

• Theory of Acquired Characteristics

• Theory of Use and Disuse

• Theory of Need

Deals with the hereditary factors affecting a population. It could occur whether an individual migrate from one population to another or even without migration.

• Population Genetics

• Allele Frequencies

• Synthetic Theory

This occur because of the several mutagens like ultraviolet radiation and hazardous chemicals in the environment that can affect genes and chromosomes.

• Speciation

• Evolution

• Mutation

It occurs through geographical isolation and both species evolve separately.

• Allopatric

• Parapatric

• Sympatric

This theory Shows that organs that are not used will disappear while those that are constantly in use will be developed.

• Theory of Use and Disuse

• Theory of Need

• Theory of Acquired Characteristics

An example of this revolutionary pattern is the prey-predator relationship of a bat and a moth. When the moth evolves due to environmental pressures, the bat will also evolve because it has a dependent relationship with the moth as the moth's predator.

• Microevolution

• Coevolution

• Convergent Evolution

This revolutionary pattern selects organisms that will or will not survive based on their existing traits. Organisms with favorable traits are those that are best suited to the environment and have a better chance of survival.

• Natural Selection

• Genetic Drift

• Speciation

Is the evolution of morphological similarities in organisms that are not closely related but they have similarities in their habitats, they have similar environmental demands.

• Coevolution

• Convergent Evolution

• Punctuated Equilibrium

The process of speciation occurs at a small level, where geographical barriers separate the species at the periphery isolating the small population. Evolution occurs separately.

• Peripatric

• Allopatric

• Sympatric