Comparing Charles Darwin's Idea Of Evolution And Natural Selection

This relates back to the lab because in our lab we tested the ability of the finches beaks, small and large, to break small and large seeds. Darwin believed that based on the environment and food supply some finches, depending on their beak size and shape, were more likely to survive. For example, if finches lived on island that only consisted of large seeds, the finches with bigger beaks would be able to eat the bigger seeds. Where as the finches with smaller beaks would have more difficulty cracking the bigger seeds. This is exactly what our lab was testing.

When travelling from island to island on the Beagle Voyage, Darwin collected finches from each island he visited. When he got back, he examined the birds realizing there were small but noticeable differences on the birds. This meant that there were different types of finches on each of the island, also meaning that there is more than one species of finch. Because each island had slightly different settings, each bird that had lived there adapted over time to better equip themselves for living on that particular island. The changes in the finches were subtle, just like how the islands were only slightly different. Different species of finches were born of the original ancestor and as more time passed and they grew more different. They grew different in terms of things like their beaks and their feathers. This example led Darwin to his idea of evolution because he saw that clearly there was no other explanation for his findings. This also proved his theory of natural selection because the original finch’s traits were weaned out and those original finches evolved into species that could survive the best in the climates of the different islands. Because he now believed that the finches had one common ancestor, he came to the conclusion that all life forms on earth have one common

Charles Darwin was an influential ideologist, known as the father of evolution. He created the theory of evolution in which species change overtime through what he called natural selection. Natural selection is the process when organisms that are better adapted to their environment survive and pass on their genetics. In The Descent of Man, Darwin explains various topics such as the similarities between races, the relevance of evolution in society, and the process of sexual selection. Ideas of The Descent of Man, were explored before Darwin, but what sets him apart is that he wanted to find the origin of man and ape as opposed to just stating similarities and differences. The theories that Darwin created contributed knowledge to evolution as

He finally observed that overtime these birds developed different physical characteristics to help them be able to survive and adapt to their surroundings. Darwin developed the “Natural Selection” theory that stated that plants and animals adapt to their surroundings and environments in order to survive. He also stated that older generations of these species would eventually die out, because they do not have the newer characteristics that needed to be developed in order to live.

Charles Darwin, born in Shrewsbury, England, was known for his studies around the world that led to the discovery of evolution. His views on “natural selection” were very broad and justified. He is known as a naturalist and the world to form biological change. Natural selection is when living organisms adapt to the environment they live in to try and live longer.

Charles Darwin did not occur with the Theory of Evolution on this trip. As a matter of fact, his grandfather Erasmus Darwin had already inject the thought that species evolve through time in Charles. However, the Galapagos finches guidance Darwin strengthen his idea of natural selection. The favorable adjustment of Darwin's Finches' beaks were chosen for over generations until they all split out to make new species.

Darwin theory, he first started talking about an organism, his theory was that in a population shows a difference in traits. The following theory was survival of the fittest, it is when one appears to look like their parents and they are comfortable in their environment, and has the possible to live longer and might reproduce being relaxed in their environment. Beneficial Traits is to increase in frequency over time in a population since individuals with traits are more likely to produce and will pass on the gene to the next generation. It is not important to be a perfect specimen, but important to produce more babies. In addition, Darwin theory was based on the

Natural Selection, a key mechanism of evolution is the progressive process by which biological traits either become more or less common in a community or population as a result of inherited traits on different reproductive success of organisms with their environment. Charles Darwin in fact put together an articulate theory of evolution and supported it with a good amount of body evidence in 1859 when he published his book. Natural selection is too however a basic mechanism of evolution like mutation, migration and genetic drift. In order for natural selection to work, Darwin came up with 5 different theories that brought about evolution. The five theories are: evolution, common descent, species multiply, gradualism, and natural selection itself. Evolution is when species come and go through time, while they exist they change. Common descent is organisms are descended from one, or several common ancestors and have diversified from this original stock. Species multiply is the diversification of life involving populations of one species diverging until they become two separate species; this has probably occurred billions of times on earth. Gradualism is evolutionary change occurring through incremental small changes within populations; new species are not created suddenly. Animals and plants of all sorts undergo changes through natural selection. The peacock is a unique animal that stood out to me that undergoes natural selection.

Darwin’s theory of evolution proposed a mechanism for decent with modification. His studies resulted in the proposal of two forms of selection, including sexual selection and natural selection. (3) The concept of sexual selection was developed by Darwin to account for many adaptations that appear incompatible with natural selection (3). Natural selection is a major component of evolution however it is still not fully understood. (2)

Darwin was, unequivocally, Galton’s most notable relative and someone from whom he drew large inspiration. Darwin became influenced by economist Thomas Malthus, who recognized, “that life is a constant “struggle for existence” and only those best suited for survival will do so” (Goodwin, 2012, p. 135). Malthus’ aforementioned belief was one that Darwin observed during his expedition on the Beagle--Darwin’s ship. Darwin recognizes that the finches he had studied during his voyage to the Galapagos islands varied from each other depending on island location and available food sources; he also notes that these variations assist the finches in survival (i.e. different beak shape to forage a specific food, stronger beaks) (p. 136). The concept that grew from Darwin’s initial findings was the concept of natural selection. Natural selection is defined as the natural process in

Just like his grandfather Erasmus Darwin he spoke of species changing over time. “Darwin along with Russel Wallace suggested a mechanism, natural selection, to explain how that connectedness and functional traits of organisms came about” (Little, 2010). The finches in the Galapagos Islands confirmed his idea of natural selection. Natural selection is a “process by which beneficial alleles increase in frequency over time in a population due to survival and reproductive success of the individuals carrying those alleles. This is a consequence of variation, inheritance and differential survival” (Bergstrom,

Charles Darwin's theory of evolution centres on the idea that species compete to survive, and favorable characteristics are passed on from one generation to the next. Darwin said that evolution took place by a process of natural selection or survival of the fittest. This meant that the animals and plants best suited to their surroundings survived and were able to pass on their genes to their offspring. The ones that weren't best suited died off and didn't get the chance to reproduce.

Some reasons why beaks were thought to be so useful for testing Darwin’s theory of natural selection was because it seemed that the more favorable variations in their beaks will be passed down. Another reason was because there were more variations in the beaks depending what the finches ate so he could study a variety of beaks.

Darwin’s theory of evolution is the most commonly accepted theory because of the strong evidence that the theory is built on. One of the most famous examples of Darwin’s theory is the Galapagos finches. Darwin observed different finches from different islands of the Galapagos. He found that the finches from all the different islands had differently evolved beaks. Darwin

When that happens over many generations a species’ gene pool changes to only include the traits that are a best fit for ensuring survival of that species, and a new species may evolve. In the case of the Galapagos finches Darwin studied, biologists have since found that one of the differences was their beak size, which were adapted to the specific seeds available to the finches as food on the different islands. This would support this principle as only the birds able to eat the local seeds would be able to survive to reproduce, thus over many generations, new finches with a variety of different beak sizes would “evolve”. The