What is Charles Darwin theory of evolution?

Answer 1

That through time, species of animal, plant, or bacteria undergo change.

When a life form reproduces, each of its offspring (babies) will be different from the parents because of genetic mutations. Sometimes these mutations may give it an advantage over other individuals of the same specie. (e.g.: A giraffe has a higher neck and can search food on taller trees.) Because of this advantage, the life form that is different (we will call it A) can live longer and has better chances to reproduce. The life form that has not this advantage (we will call it B) will live less longer and will have less chances to reproduce. Because of that, the population of "A" will increase and the population of "B"will decrease. In the end, there will only be "A" remaining.

Answer 2

That through time, species of animal, plant, or bacteria undergo change.

When a life form reproduces, each of its offspring (babies) will be different from the parents because of genetic mutations. Sometimes these mutations may give it an advantage over other individuals of the same specie. (e.g.: A giraffe has a higher neck and can search food on taller trees.) Because of this advantage, the life form that is different (we will call it A) can live longer and has better chances to reproduce. The life form that has not this advantage (we will call it B) will live less longer and will have less chances to reproduce. Because of that, the population of "A" will increase and the population of "B"will decrease. In the end, there will only be "A" remaining.

Answer 3

Charles Robert Darwin's theory of evolution was that all varieties of life descended from shared (in common) ancestors. This means more complex creatures naturally evolved from simpler ancestors, over time.

In other words more agile or better fit organisms tend to survive and to pass on their superior characteristics to subsequent generations.

The theory of evolution consists of two primary rules. One is that replication is imperfect, hence variation is introduced in reproduction. The second is that the environment may act as a sieve to winnow "favorable" traits from those traits conferring no natural advantage.

The interplay between these two rules accounts for all the species we find today, and all the fossils of species that ever existed. Indeed, if evolution was right we should expect to be able to categorize life forms into a nested hierarchy based upon the ancestral relationships, and this is what we find.

For example, our own species is Homo sapiens. We are catarrhines (narrow-nosed simians), sharing certain attributes with extinct species of other catarrhines such as neandertal and australopithecus. The simians are a subset of haplorhini, or dry-nosed primates, which includes tarsiers. Together with the strepsirrhini the haplorhines form a group known as the primates. Primates include lemurs, lorises, (both of which are strepsirrhines), apes, and us.

All primates are euarchonts, which together with the glires (rodents and lagomorphs or "bunnies") form the euarchontoglires. These are eutherians, or placental mammals. Together with the metatherians or marsupials, and the monotremes, these three groups form the mammals. Mammals are characterized by their ability to lactate (express fluid from mammary glands) to nurse their young, and have hairy bodies.

Curiously, the platypus (an egg laying mammal or monotreme) does not have teats. Although the female does express milk to nurse her young, that occurs through pores in her skin. The platypus possesses two genes that were previously found only in birds, amphibians, and fish.

Mammals are one of four major divisions of quadrupeds, or four limbed creatures. The other groups are amphibians, reptiles, and dinosaur/birds.