The article I read this week was about Chytridomycosis also known as amphibian chytrid fungus disease. This is an infectious disease that affects many amphibians around the world. It’s caused by the chytrid fungus which causes sporadic deaths in some and 100% mortality in others. This disease has been suspected to be the cause for many mass deaths and extinctions of frogs since the 1990’s but its origin and impact is not well known. Chytrid was first found in dead and dying frogs in Queensland in
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Evolution All humans have one thing in common, their ancestry. Evolution is a theory that explains the genetic diversity in all living organisms. For example, it explains how humans evolved from apes (“Academy defends teaching evolution”). The theory of evolution is largely based on the ideas of Charles Darwin and is controversial because it contradicts current theories on creation (“Human Evolution”). Charles Darwin is credited for the beginning of the theory of evolution (look in cites). The reason
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such as Lyell’s theory of uniformitarianism. Darwin linked the affects of an earthquake he experienced to Lyell’s ideas on the earth slowly changing, and the ability to look forward and backwards, which was a stepping-stone to future theories of evolution. Being in an entirely new environment provided brand new organisms for Darwin to study, to which he had no previous biases, making his observations completely
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cultural evolution The word Lamarckian is referred to as being the view that offspring acquire their traits through inheritance from their parents. It is often seen as a bad word in the name of evolution due to Darwin’s contribution to evolution as being seen as correct. However, when cultural evolution is brought into the situation there can be some Lamarckian aspects brought into play. This may seem confusing as Lamarck is referring to genotypes and phenotypes of biological evolution. The reason
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are proven to be identical or homogeneous to other species of animals making them all evolved from one common ancestor. Archaeologists thought that a dinosaur fossil was a large iguana but as stated in Green, Hank [CrashCourse]. (2012, Jan. 11). Evolution: It's a Thing - Crash Course Biology #20 [Video file]. Retrieved from https://www.youtube.com/watch?v=P3GagfbA2vo, “Macroevolution is just microevolution on a longer time scale, the sort of thing that turned hippos into whales is a lot harder to
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Charles Darwin Did you know that birds are descendants of dinosaurs? This is because of evolution, which was first put into theory by Charles Darwin. His theory, called Darwinism, evolution, or natural selection, is very important in many branches of science. Without his research, the belief that there was no change in species in all of history would still be believed. Charles Darwin was born on February 12, 1809. His father and grandfather were both scientists, so he was encouraged to go into
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The theory of evolution by natural selection, first formulated in Darwin's book "On the Origin of Species" in 1859, is the process by which organisms change over time as a result of changes in heritable physical or behavioral traits. Changes that allow an organism to better adapt to its environment will help it survive and have more offspring. Darwin's theory is fairly simple and has five main essential points: (1) variation exists in natural populations, (2) many more offspring are born each season
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Humans, animals, and the environment are forced to interact with each other due to the cycle of the ecosystem. Green plants are the producers since they produce their own food. On the other hand, humans and animals are both consumers. Not being able to produce their own food, they are ought to use other creatures to survive. If a species could not find food, it would extinct. These food-haunter relationships led researchers to define the “speciesism” phenomenon---a prejudice or attitude of bias in
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Evolution, as it relates to genetic coding through the frequency of alleles, is defined as; A change in allele frequency in a population over time. Darwin has provided the mechanism for this type of evolution through his work,” the origin of species”. At this point, I would like to take a minute to note that Darwin observed what is sometimes referred to as microevolution. He saw the change and effects of allele frequency changing due to environmental change. However, a bird remained a bird and
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In this section the author Isenberg begins by emphasizing the two leading movements the began 1900, eugenic movement and Darwinism. She says, that Du Bois in his speech declared that social Darwinism had found such a favor in America because the very idea of survival of the fittest ratified the reactionary racial politics that already prevailed. Darwin endorsed an inevitable inequality among men and the races of men that no philanthropy ought to eliminate. This theory stressed the necessity for human
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