The main point of Darwin s theory of evolution specifies that 100,000 urgent15

It's simple, 16 words:

Overbreeding (which is the basis of evolution).

Struggle for survival (the dynamics of evolution).

Genetic variation (the root cause of evolution).

Survival of the fittest (the result of evolution).

The doctrine of natural selection, which focuses on the survival of the fittest.

Natural selection, survival of the fittest.

Main idea: Darwin believed that there is a struggle for survival between living things, and that the adaptors survive and the unfit are eliminated, which is natural selection.

It is through heredity, mutation, and natural selection that living things evolve and develop from low to high, from simple to complex, and from few to many.

1. Evolutionary theory: species are changeable, existing species are changed from other species, and one species can become a new species.

This has long been confirmed by observations and experiments in biogeography, comparative anatomy, comparative embryology, paleontology and molecular biology, and the emergence of new species can be directly observed in the laboratory and in the wild.

So, this is a scientific fact that is as reliable as "the earth is round" and "matter is made up of atoms".

Today, with the exception of a few who ignore the facts because of religious fanaticism, there are practically no biologists who deny the fact of biological evolution.

2. The doctrine of common ancestor: All living things come from a common ancestor.

Molecular biology discovered that all living things use the same set of genetic code, and biochemistry revealed a high degree of consistency at the molecular level, which ultimately confirmed Darwin's vision.

So, this is also a generally accepted scientific fact.

3. The Doctrine of Natural Selection: Natural selection is the main mechanism of evolution.

The existence of natural selection has been confirmed by countless observations and experiments, which is also a scientific fact.

The above three points, that is, we often hear about "natural selection, survival of the fittest", the birth of modern genetics, for which provides important evidence, in fact, natural selection, competition is "genes".

Due to limited living space, resources, etc.

Overbreeding inevitably leads to a struggle for survival.

In the process of life, biological individuals will mutate. In the struggle for survival, individuals who have favorable variation and can pass on the favorable variation to the next generation are more likely to win the struggle for survival and survive and reproduce.

On the other hand, individuals with unfavorable mutations are prone to defeat and die in the struggle for survival. That is to say, all the organisms that survive are adapted to the environment, while the organisms that are eliminated are not adapted to the environment, that is, "survival of the fittest".

The main ideas of Darwin's theory of evolution are the doctrine of natural selection, including overbreeding, struggle for survival, heredity and variation, and survival of the fittest.

The main idea is "natural selection for the survival of the fittest". He believes that everything goes through a process from adaptation to inadaptability, and those who can't adapt will be eliminated by society!

Darwin's theory of evolution, also known as the theory of natural evolution (the knowledge of biological history is strung together), its main point is the theory of natural selection, that is, natural selection.

On the other hand, modern theories of biological evolution are developed on the basis of Darwin's theory of evolution, and are not based on Darwin's theory of evolution.

Natural selection, survival of the fittest.

The theory of evolution has been largely falsified after five mass extinctions, which Darwin himself admitted in his later years.