Evolution

Charles Darwin, an English naturalist, proposed the theory of evolution through his book "On the Origin of Species" in 1859. Darwin's theory suggested that species evolve over time through the process of natural selection, where those with advantageous traits survive and reproduce. His work revolutionized the field of biology and our understanding of the diversity of life on Earth.

Earliest life form is microbe, a unicellular organism. First bacteria can dated back to 3.4 billion year ago. Emergance and true cut point from being a replicating molecules to a living cells is still unknown.

The chimps taste for fruit drove the selection of individuals that were tending towards trichromatic vision. This allowed them to distinguish the ripest fruit, thus the best nutritionally, with their color vision. Thus this drove selection for these individuals as this train was reproductively successful.

Early photosynthetic bacteria changed Earth by producing oxygen as a byproduct of photosynthesis, which gradually built up in the atmosphere and led to the Great Oxidation Event around 2.4 billion years ago. This increase in atmospheric oxygen had a profound impact on the evolution of life on Earth, eventually paving the way for more complex organisms to thrive.

The autotroph hypothesis suggests that the earliest life forms on Earth were autotrophic, meaning they were capable of producing their own food from inorganic sources like sunlight or chemicals. These early autotrophs served as the foundation for the evolution of more complex organisms that depend on them for energy and nutrients.

The formation of life on earth has little to do with evolutionary sciences, which deal how lifechanges, not how it begins. The formation of life has as little to do, specifically, with evolution as it does with cell theory, or biogeography, or diet of organisms, or photosynthesis... it's a prerequisite for these processes.

It is difficult because there are too many factors that have to be considered, such as temperature, the amount of food in an area, and competition.

Evolutionary advantages are traits or characteristics that increase an organism's chance of survival and reproduction in its environment. These advantages help the organism adapt to its surroundings, compete with others in the population, and pass on its genes to future generations. Examples include camouflage for protection, efficient hunting abilities, and disease resistance.

The first stage in boundary evolution is the definition of the boundary itself, where parties delineate and establish the limits of the area in question. This stage often involves negotiation, agreement, and formal documentation to clarify the rights and responsibilities of each party regarding the boundary.

Darwins' Theory of Evolution by Natural Selection says that species either adapt and evolve via an accumulation of sequential minor variations, or become extinct.

The Gaia hypothesis says that the planet's biomass self-regulates the conditions on the planet to make its physical environment (in particular temperature and chemistry of the atmosphere) on the planet consistently hospitable to the species which constitute its 'life'. For example, when atmospheric carbon dioxide levels rise, the biomass of photosynthetic organisms increases and thus removes more carbon dioxide from the atmosphere. Gaia has attracted considerable debate and should, at this stage, be considered a hypothesis rather than a proven theory.

The two concepts are parallel in that they explain the ability of an 'organism' to adapt to the changing environment. However, one is concerned with biological processes, while the other is concerned with macro-physics. They neither contradict nor support each other.

Gregor Mendel's experiment with pea plants was one of the first genetic experiments. Genetics play a very important role in evolution, for if there were not genes, nothing would evolve. Since things evolve by selection (or what genes get 'selected' to be passed down to the next gereration), Gregor polinated one plant with another plant of the same species with different features, and he got a plant that had similar features to the previous plants. Thus, he speculated that traits from parent plants would be expressed in their offspring because of genes.

Charles Darwin is widely credited with developing the theory of evolution through natural selection. His landmark book, "On the Origin of Species," published in 1859, presented evidence for how species change over time through a process of adaptation to their environment.

This is an interesting question. I think I know the answer to this: Carl Linnaeus. He was the first scientist to realize that he could not establlish any system of biological classification that did not include humans in the taxon of apes.

Human beings are the present result of a long history of evolutionary changes stretching back into the past for millions of years. The first representative in that long history of change that can be regarded as people not just another species of ape, would probably be Australopithecines about 2 million years ago. These developed into homo sapiens (the thinking man) some 400,000 to 250,000 years ago, probably in Africa. From Africa we spread throughout the world. The whole process was driven by the evolutionary processes as described by Charles Darwin in his "Origin of Species."

The evolution of life is a fascinating and complex process that highlights the incredible diversity and adaptability of living organisms. It showcases how species have changed and diversified to survive and thrive in various environments over millions of years. Studying evolution provides valuable insights into the interconnectedness of all life on Earth.

Yes, just not to a very noticeable level. Evolution happens gradually, and over many generations. If you could compare us to humans a few thousand years from now (if humans are still around by then) chances are you will notice differences.

Evolution suggests that over time, gradual changes in the genetic makeup of a population can lead to the emergence of new species. This process, known as speciation, can occur through mechanisms such as natural selection, genetic drift, and mutations, which drive the divergence of populations until they are no longer able to interbreed and produce viable offspring. This results in the formation of distinct species.

Which factor might determine whether the frequency of the new allele will increase in a population where a mutation occurs?

The significance of the process of evolution is that it led to life as we know it. Wheter or not we believe that evolution was guided by God or some other deity, without evolution there would only be the simple organisms that first developed on Earth over a billion years ago.

Yes, as a scientific concept, Darwin's theory of evolution by natural selection has been supported by a vast amount of evidence since its proposal. It serves as the foundation for modern evolutionary biology.

Apes or chimpanzees, because humans share a common ancestor with these species and have diverged relatively recently in evolutionary terms. By comparing the DNA sequences of humans and apes, scientists have found high levels of similarity, supporting the theory of evolution.

The building blocks of life are certain large molecules such as amino acids, which can be 'accidentally' formed in nature (perhaps when lightning strikes the proper soup?). All known life forms contains DNA or fragments of DNA such as RNA which are also organic molecules that can divide and join to double length or separate to make new cells. Any original cell had to acquire even the simplest molecules plus DNA/RNA encoding to divide and replicate and feed to grow. This could have occurred within the giant chemistry lab called earth or 'spores' may have arrived from outer space (leaving the question where they came from). The earth is about 5 billion years old while the universe is perhaps about 15 billions years old and the earth contains heavy elements that originated from long gone supernovas. Therefore the universe had perhaps three times as much time and far more opportunities than a single planet earth to create life as we know it. Still, many believe that the earth is very special with an ideal sun at the correct heating distance, the right size planet regarding gravity and the ability to hold a protective atmosphere regarding lethal UV light.