Charles Darwin

Natural selection leads to evolution by favoring individuals with advantageous traits that help them survive and reproduce in their environment. Over time, these advantageous traits become more common in the population, leading to evolutionary change.

my main man jesus is all over this, first he picks a charmander ofc (who doesn't want a awesome dragon lol) then he trains that little guy up to level 16 and bam, evolution right before his eyes so he lets all his bros do it too

Understanding how genetic variation can be inherited from one generation to the next helps support Darwin's theory of natural selection, as it provides the basis for the variability upon which natural selection acts. The mechanisms of inheritance, such as dominant and recessive traits, allow for the passing down of advantageous traits that can confer a survival advantage, leading to their increased prevalence in a population over time through natural selection. By observing how traits are passed on and how they can change within a population over generations, we can see how natural selection can drive the evolution of species.

Darwin developed The theory of evolution by natural selection.

So, to answer you question, all of it!

You need to make a distinction between evolution, the change in allele frequency over time in a population of organisms, and natural selection, the nonrandom survival and reproductive success of randomly varying organisms. Natural selection is the main driver of evolution.

Knowledge of the ancestry, the evolutionary history of organisms is useful in helping find associations between genetic sequences and phenotypical expressions, which in turn is useful in finding treatments for both inherited conditions and acquired diseases.

Knowledge of the processes by which evolution proceeds is also useful in determining how pests are likely to react to the introduction of pesticides, how anti-biotics will affect the development of infectious agents, and so on. In this manner, knowledge of evolutionary processes benefits both medicine and agriculture.

A fairly new field that has potential uses is the field of evolutionary psychology, which allows psychologists to model human behaviour in terms of evolved predispositions. This might help predict how large groups of people are likely to respond to anything from political shifts to advertisement campaigns.

These are just a few examples of how our understanding of evolution and our evolutionary past can help people and society.

There is no separate theory of evolution for humans. Human evolution is the theory of evolution applied to humans. Evolutionary theory states that modern lifeforms, including humans, derive from common ancestors through a process of reproductive variation and natural selection.

Darwin's theory, which is no longer just Darwin's, is the bedrock on which the modern discipline of biology rests. All the disparate observations that naturalists made up to the time of Darwin suddenly had explanations. The species problem, how species arise, was, basically solved. Predictions from the theory could now be made and tested, just as they are made and tested today.

" Nothing in biology makes sense except in the light of evolution. "

Dobzanski

No. Natural selection works in all populations. However, new alleles spread more slowly in large populations; the large size has a stabilizing effect. So one should expect large populations to change more slowly than smaller populations.

The morphology of embryos at various stages, and even the developmental patterns of embryos, show the same pattern of nested hierarchies that we find in morphology, behaviour and genomes, independently confirming common descent, but also teaching us how morphologies could diverge through relatively minor genetic shuffling.

The two key concepts are that slight deviations are introduced in any imperfect replication scheme, such as the way plants or animals are born, and that environmental factors play a role in determining the survivability between individuals with beneficial inheritable traits.

The interplay between these two forces, random mutation and natural selection, ultimately leads to speciation and accounts for all currently observed species, as well as those known only by their fossil remains.

Artificial selection involves selecting specific individuals with desired traits for breeding in order to enhance those traits in future generations. Traits can include qualities related to size, color, behavior, or other characteristics that are deemed desirable by the breeder. Over time, this process can lead to significant changes in the population's genetic makeup.

Charles Darwin, contrary to popular opinion, did not formulate the theory of evolution, but he did refine it. The theory had been developed and added to by numerous scientists through the years. Darwin simply added to evolutionary theory.

Charles Darwin's tree of life, depicted in his book "On the Origin of Species", illustrated the idea of common ancestry among all living organisms. It showed how all species are connected through a branching pattern of evolution, with each branch representing a different species resulting from descent with modification. The tree of life highlighted the unity and diversity of life on Earth.

Charles Darwin is certainly one of the most famous scientists, particularly known for his contributions to the theory of evolution by natural selection. However, there are many other scientists who are also extremely well-known in their respective fields, such as Albert Einstein, Isaac Newton, and Marie Curie.

Natural selection (survival of the fittest) is a key mechanism driving evolution but they are not the same. Evolution encompasses all changes in allele frequencies in a population over time, while natural selection is one process that can lead to those changes by favoring certain traits in individuals that increase their reproductive success.

Answer 1

If you have group of a species with dark skin and another group with light skin in an environment with much direct sunlight, the dark skinned gene group will be selected as the dark skin (with more melanin) is protective in that sunlit environment. If the environment is northern, the lighter skin gene will become more common. This variation will be a help in natural selection.

Answer 2

Genetic variation, or reproductive variation, are the mechanisms that cause one sibling to be slightly different from another. It is this difference that allows natural selection to work, for there may be various reasons, to do with these differences, why one sibling is more successful in producing offspring than the other.

Answer 1

Many churches of the time posited that god created all the organisms of earth at one time, so that no organism was related except to vary from it's created kind. Darwin showed that through the process of natural selection new species were constantly arising from related organisms.

Answer 2

Theism rationalizes its beliefs in deities by pointing to the organized nature of nature, claiming that such complexities could not have come about through unguided natural processes. Darwin, with his theory of natural selection, provided just that: an explanation for natural complexities in terms of unguided processes. Basically, while Darwin's theory does not claim that no gods are involved in nature, it did away with the need for any gods to explain the diversity of life.

He didn't.

Charles Darwin did not like the rough and tumble of public debate about his idea, though scientific debate was another thing altogether. The debate had spilled over into the public arena and needed on the spot debaters, which Charles Darwin was not. So, Darwin's friends that he first convinced of the rightness of his theory went to bat for him. Thomas Huxley, Darwin's bulldog, was foremost among them, but there were also others. Hooker, Lyell, and Wallace were the other main defenders of the theory in Darwin's stead.

Darwin's theory is no longer just Darwin's theory. In the 150 years + that the theory has been around it has been modified and strengthened by repeated testing and has made myriad predictions and generated a plethora of testable hypotheses.

No, the theory of evolution by natural selection is not expired.

Darwin observed that high birthrates and a shortage of life's necessities forced organisms into a constant "struggle for existence", both against the environment and against each other is which led Darwin to propose his theory of constitution

Basically, it is "survival of the fittest."

As certain traits of species become in-adaptable to certain environmental changes, the organism with those traits will die out. The organism of that species with the stronger genes will live and reproduce, thus creating more of the strong trait and less of the other.

Darwin was by no means the first person to come up with a theory of evolution. However, he was the first person provide a mechanism by which evolution could occur. He called this natural selection and is essentially the way in which individuals with characterisitcs that better suit their environment survive and ones which don't die out. Therefore, eventually the whole species will possess these advantageous characteristics and evolution will have occured.

The theory of natural selection, proposed by Charles Darwin, explains how species evolve over time. It states that individuals with traits that are better suited to their environment are more likely to survive and reproduce, passing those traits on to their offspring. Over many generations, this process leads to the accumulation of advantageous traits in a population, resulting in evolutionary change.

Charles Darwin used the scientific method by making observations of the natural world, asking questions about those observations, forming hypotheses to explain them, conducting experiments and collecting data to test those hypotheses, and then revising his hypotheses based on the results. He also shared his findings with other scientists for review and criticism, which is a key aspect of the scientific method.