Charles Darwin 's Theory Of Evolution

Human beings are no exception to biological evolution. Like other organisms around the world, humans have significantly changed overtime and have developed all sorts of diverse characteristics. One noticeable characteristic of human beings is the variation of skin

Chimpanzees have what is called melanin, which is a dark brown pigment that protects them from UV radiation. Melanin is a natural sunscreen, which filters out UV radiation. It is been proven that people with high concentration of melanin in their skin heading to come from tropical areas and it has protected them from skin cancer. After all of this research, Jablonski and Chaplin then ask, “what role melanin might play in human evolution?” (170).

11. My hypothesis was fairly accurate. Those born with very light pigmentation in a high UV climate wouldn’t have survived, at the same time it makes sense that as the genetics changed more offspring of the successful colour would have been produced.

Jablonski and Chaplin describe melanin as nature's sunscreen. They also define melanin as “a large organic molecule that serves the dual purpose of physically and chemically filtering the harmful effects of UV radiation; it absorbs LTV rays, causing them to lose energy, and it neutralizes harmful chemicals called free radicals that form in the skin after damage by UV radiation.” Anthropologists and biologists had rationally believed that people living in tropical areas had higher concentrations of melanin in the skin to serve as protection against skin cancer. James E. Cleaver of the University of California in San Francisco refuted this idea. He stated that most skin cancers appeared later in life so in conclusion the amount of melanin that a dark skinned person produced had no relation to skin protection. Cleaver showed that diseases like xeroderma pigmentosum, a disorder in which the ability to repair damage caused by UV light is deficient, and melanomas, a serious type of skin cancer that develops in the cells that produce melanin, can be rare and even fatal. The authors ended up questioning the role that melanin played in human

As humans evolve, they will change. Through the years, humans will both change mentally and physically. Through research and reasoning, people can only predict what might be the next human evolution. Much of what is predicted is based on the world that humans live in today. Some day, humans might be even be able to change their own genetics as science and technology advances.

Two different factors affect the UV light radiation a developing population would be exposed to, the first being the UV light reaching the earth, the equator is exposed to the largest amount of annual UV radiation, the annual UV radiation exposure reduces the further north or south a population develops, UV exposure is the driving force behind the evolution of melanin production so those that developed nearest to the equator would have generally have greater amounts of melanin and thus darker skin. The other factor is shelter; developing humans in areas with the greatest amount of shade from the UV light have less need to protect themselves from it

This paper discusses the theory of evolution in detail. Topics this paper will address include defining the theory of evolution and explaining how the theory has evolved over time, as well as highlighting the strengths and weaknesses of the theory and examining how effective the theory is in today’s world.

Genetics once served a vital role in understanding different cultures and races around the world. Even though many commonly accepted distinctions between races have been proved to be inaccurate, they are still used to classify different groups of people. One of the most prominent examples is skin color. This trait is most commonly associated with Sub-Saharan Africa, and thought of as a trait of the black race. However, darker skin is common of peoples in Australia and South America. While dark skin can come from inherited traits, it is also largely a result of natural selection due to their environments which explains why peoples with dark skin tend to be located at or below the equator. We still use physical characteristics to judge others;

Melanoma is a serious type of skin cancer that affects the melanocytes in your skin, melanocytes produce melanin which are the pigments that give your skin its colour. Despite the fact that the exact causes of melanoma are unknown there are however several factors that increase the risk of melanoma, these factors include exposure to ultraviolet radiation and genetics. Melanoma is most common in lighter skinned caucasians born after the 1940s (Erdmann et al 2012) as genetically they are not as resistant to Ultraviolet radiation, with certain trends such as sunbathing and the use of a tanning booth, individuals unaware of the risks to melanoma are purposely exposing themselves to Ultraviolet radiation to create a desired tan. Melanoma is the

Natural selection is one of the most significant methods in which evolution can occur in a population that was proposed by Charles Darwin, among other scientists, in the 1800s. The term summarizes the concept that heritable traits that are able to survive, due to fitness for their environment, and successfully reproduce will likely become more common among a population. On the other hand, natural selection also includes the idea that heritable traits that either cannot survive, or have unsuccessful reproduction will become less common in a population. Other aspects of natural selection as a whole include evidence from various scientific fields, the key points of the process, its causes, and its effects.

Before I get into detail about Charles Darwin’s theory of natural selection, I should probably tell you about him and his life first. He was born in shrewsbury, England, on the 12th of February 1809. He was born after a long line of scientists, with his father being a medical doctor, and his grandfather a renowned botanist. Once he was sixteen, he and his brother went to Edinburgh university. Through his education and experience, Charles decided not to do medical work due to blood, but was inclined to study natural history. His mentor and botanist professor, John Stevens Henslow had suggested Darwin for a naturalist’s position aboard the HMS beagle. In 1831, Charles embarked on a five year voyage on the HMS beagle. After coming back, Darwin’s

Melanin has many benefits for humans. One of the largest benefits it gives us is protecting us from ultraviolet rays of the sun. The melanin will not give you complete protection. In general, the darker skin a human has, the longer they can stay in the sun without getting sun burned

Melanin has played a significant role in human evolution. In this paper I will discuss the importance of melanin in its role in the human biological system and how it relates to the natural selection of suitable human life according to geography and environment.

Charles Darwin broached the theory of natural selection in his book the Origin of Species, which has been considered the basis of evolutionary biology to this day. Natural selection is when populations of a species evolve over the course of many generations. Darwin believed that species were not created separately, but instead, species were derived from one another. In other words, the evolution of species creates many variations among creatures, and this is because all of those species came from a common ancestor, and characteristics changed to increase the species chance of survival.

In the event that you take a gander at the general population around you, would they say they are all the same?What would happen on the off chance that we lived in this present reality where all the food was kept 8 feet off the ground there was genuinely no way you could get it if you weren't tall? Without a doubt, the short people would die. The taller ones would increase in population, and a little while later, as opposed to a population of people of all sizes, you would have a population of recently tall people. Living things that are most proper, or balanced, to their environment survive and repeat. Those that are not, can't survive. This strategy is known as Natural Selection. This methodology clears up how Charles Darwin's theory of "progression" can happen.