What is Darwinism?
Darwinism is also referred to as Darwinian Theory or Theory of Natural Selection, Darwinism is a biological evolution theory that was developed by English naturalist Charles Darwin (1809-1882), This theory explained a philosophy in which all species of organisms synthesize and develop through natural selection of small and hereditary variations that Increase the ability of an individual to compete, survive and reproduce. It is, more exactly, a unique form of evolutionary opinion for the origin and nature of earthly life. The primary structure begins with overproduction, struggle for existence, variations, survival of the fittest, and origin of species in this theory. These can be further described as follows.
- Species are created by individuals who vary from one another with respect to their many traits.
- Species have the ability to multiply their numbers from generation to generation at an exponential rate.
- These individuals will usually survive comparison than others, producing more offspring.
- Offspring will inherit several variations from their parents.
- As a result, favorable variations will be passed more frequently than others and thereby will get conserved over time, and this frequent ability is referred to as ‘Natural.
Also Read: Darwin Posulates
What is Lamarckism?
The first theory of Evolution was proposed by a French biologist Jean Baptiste de Lamarck between the years of 1744-1829. Lamarckism is defined as a combination of theories involving the inheritance of acquired traits and the use and disuse of organs. In simple words, we understand the concept that all species have inner life force with special consideration of fundamental requirements and desire to generate a new structure for changes in the behavior of the whole organism. Major concepts are described by this theory which is mentioned below.
- Intrinsic Vital Force: All living things and their constituent parts are constantly developing in number and size as a result of an already existing intrinsic vital force.
- Effect of Environment and New Needs: The environment acts as a significant impact on all types of organisms, and a small change in the environment tends to make considerable changes in organisms. It also provides rise to new requirements which may be made up of new structures and change habits of the organism over a period of time.
- Use and disuse of organs: If a component is used in a continuous manner it tends to build up slowly over time where the disuse of an organ will result in its decomposition.
Difference Between Darwinism and Lamarckism
The primary difference between Darwinism and Lamarckism is that all species of organisms begin and develop by natural selection of small and hereditary variation and Lamarckism is suggested on the concept of an internal vital force that is present in all living things. Jean Baptiste de Lamarck and Charles Darwin both scientists described the evolution process via theories. These two hypotheses provide varying suggestions and obvious differences ranging from the mechanism of evolution to the enormous diversity of life on earth.
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