Alfred Russel Wallace is a British naturalist, geographer, anthropologist, explorer, and is most known for producing the theory of evolution through the process of natural selection, or the way species adapt to their surroundings in order to stay alive and reproduce. Darwin and Wallace came up with similar theories on evolution. Even though Wallace had came up with basically the same theory as Darwin, he was not known as well as Darwin was. Both theorized that organisms change over time; life on earth has changed from their common ancestors in the past, and evolution occurs by natural selection, or the process in which living things with beneficial traits that produces a lot of offspring than others.
In the Miller-Urey some major flaws were that the gasses they used might have changed throughout time and in the atmosphere. Also, the amino acids that were created in Urey's experiment could not have survived unless they were separated from the environment as soon as they were created. Even though there are all of these theories, there is no answer that is fully correct.
The video was about homologous and analogous structures, the vestigial structure, the endosymbiotic theory, and micro and macro evolution. Homologous is when the structure of the bones of different species are similar to each other. Analogous is when the structure of bones of different species that do the same thing are not similar, for example, the wings of a butterfly, prehistoric bird, modern bird, and bat have bones structured differently but they all do the same thing. Vestigial structure is when an organism has organs or structures that that seem to serve no useful function. The endosymbiotic theory is when a free living organelle is taken in by another cell and is able to live inside that cell helping it. Microevolution is the changes in allele frequencies that can occur overtime within a population. Macro evolution is when it's possible to see every generation of a living/dead species.
Human beings, as a species, are "re-writing the rule lol that governs the concept of "survival of the fitness" by lacking competition over resources. "Survival of the fittest" is the idea of those organisms that are healthier by being more fit, if they can successfully reproduce. Humans must reproduce to make more and more humans so that they survive. Humans are rewriting the rulebook because many are not competing for reproduction because they are capable of reproducing but they are now changing it up. The process of natural selection does not occur because we live in a world that consists of both the weakest and the fittest.
There are five processes that can result in evolution. Evolution means, change in the gene pool of a population from generation to generation by such processes as mutation, natural selection, and genetic drift. The five processes will move from the pinky down to the thumb. The pinky should remind you that the population can shrink. The ring finger should remind you of mating. The middle finger should remind you of the word 'mutation.' The pointer finger should remind you of movement. The thumb should remind you of adaptation.
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May 2014
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