Biology

Difference between Darwinism and Lamarckism

Main difference

The main difference between Darwinism and Lamarckism is that the theory of Darwinism is based on the idea of ​​natural selection, while the theory of Lamarckism is based on the concept of internal vital force found in all living organisms.

Darwinism vs Lamarckism

Darwinism gives the idea that all living organisms arise and develop through the process of natural selection that increases the ability of organisms to survive, compete and reproduce, while Lamarckism gives the belief that new structures are produced from new desires and the habits of organisms change over time. . Darwinism does not stop believing in the internal life force of Lamarckism, while Lamarckism does not agree with Darwin’s theory of natural selection. The two main factors of Darwinism are the struggle for the existence and survival of the fittest; On the other hand, Lamarckism does not accept these two factors. According to Darwinism, only the most suitable and useful variations will be transferred over successive generations; Conversely, all acquired characteristics are inherited by the next generation and were proposed by Lamarckism. According to Darwinism, an organ can develop or degenerate further only because of continual differences; on the other hand, according to Lamarckism, if an organ is in continuous use, then it would be better developed, and if an organ is neglected, then it may result in its degeneration.

Comparative chart

Darwinism Lamarckism
It is a theory of the evolution of life and says that all organisms arise and develop through the process of natural selection of small inherited variations that increase the ability of the individual to survive, compete and reproduce. Lamarckism is also known as the inheritance of acquired characteristics, which means that an organism can transmit all its characteristics to its offspring that it has acquired through use or disuse during its life.
Concept
Organisms emerge and develop through the process of natural selection that increases the ability of organisms to survive, compete, and reproduce. New structures are produced from new desires and the habits of organisms change over time.
Exceptions
Do not distrust the inner life force of Lamarckism It does not agree with Darwin’s theory of natural selection.
Fight for the existence and survival of the fittest
Darwinism two main factors are the struggle for the existence and survival of the fittest. Do not accept these two factors
Generations
Only the most suitable and useful variations will be transferred over successive generations. All acquired characteristics are inherited by the next generation.
Organs develop / degenerate
An organ can develop or degenerate further just due to ongoing differences If an organ is in continuous use, then it would be better developed, and if neglect of an organ occurs, then it may result in its degeneration.
What is Darwinism?

Darwinism is the theory of biological evolution and says that all organisms arise and develop through the process of natural selection of small inherited variations that increase the individual’s ability to survive, compete and reproduce and also known as Darwinian theory or theory. of natural selection. Generally speaking, it is a distinctive way of explaining the evolution of the diversity of life on earth and in history. The main factors of the theory include the struggle for existence, overproduction, the survival of the fittest, and the origin of species.

Main structures of Darwinism

  • As for various traits of the species, they vary slightly from each other, which are made up of individuals.
  • At a geometric rate, species can increase their number of generations.
  • This general trend of species is assessed by limited resources, population principles, predation, and disease that will ultimately decide the struggle for survival among members of specific species.
  • Some individuals will have some differences, providing them a small benefit in their fight where the individuals will allow better and more efficient access to greater resistance, resources and greater achievements to avoid predation.
  • Some of these individuals can survive better than others and produce more offspring.

What is Lamarckism?

Lamarckism is also known as the inheritance of acquired characteristics, which means that an organism can transmit all its characteristics to its offspring that it has acquired through use or disuse during its life. This theory was proposed by Jean Baptist de Lamarck, a French biologist (1744-1829). In simpler terms, this idea suggests that there is an internal vital force in all living organisms with special considerations of essential wants and needs to produce new structures and also change the habit of an entire organism.

Main concepts

  • Internal Life Force: As a result of the pre-existing internal life force, all living things and their components are increasing in size and number.
  • Use and disuse of an organ: If an organ is in continuous use, then it would be better developed, and if the neglect of an organ occurs, then it can result in its degeneration.
Key differences
  1. Darwinism gives the idea that all living organisms arise and develop through the process of natural selection, while Lamarckism gives the belief that new structures are produced from new desires and change the habits of organisms to the long of the time.
  2. Darwinism does not stop believing in the internal life force of Lamarckism, while Lamarckism does not agree with Darwin’s theory of natural selection.
  3. The two main factors of Darwinism are the struggle for the existence and survival of the fittest; on the other hand, Lamarckism does not accept these two factors.
  4. Only the most suitable and useful variations will be transferred over successive generations, which is according to Darwinism; on the contrary, all acquired characteristics are inherited by the next generation, and this idea was proposed by Lamarckism.
  5. According to Darwinism, an organ can develop or degenerate further only due to continuous differences; on the other hand, according to Lamarckism, if an organ is in continuous use, then it would be better developed, and if an organ is neglected, then it may result in its degeneration.

Final Thought

The above discussion concludes that the theory of Darwinism establishes the idea of ​​natural selection and does not accept the idea of ​​the internal life force of Lamarckism, while the theory of Lamarckism is based on the concept of internal life force and does not accept the concept of selection. natural of Darwinism.

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