Steven Cheng Final Copy
Scientific explanations are evaluated using evidence from the natural world. By performing experiments, science is a process that uses data and evidence to explain the evolutionary process. There is Constancy and Change in Natural Systems that can be, understood by recognizing patterns and explained through mathematics. As we discussed in class “Science can be considered a form of conceptual evolution where natural selection insures the survival of the fittest ideas”. Those 3 ingredients are heritability, variation and differential success. In order for selection to occur three main criteria’s are necessary in order for a specie to prosper and survive. Without these ingredients a species will have little to no chance …show more content…
Natural selection is known as an evolutionary change through a process of variation in each generation and differential survival of individuals with different combinations of these variable characters. Individuals with characteristics which increase their probability of survival will have more opportunities to reproduce and their offspring will also benefit from the heritable. Over time these characteristics will spread through the population and the chances of survival increase. A selectionist perspective is necessary because the environment does select for characteristics that help an organism adapt to their environment. But there are some events that happen that being well-suited to the environment may not help. The comprehensive evolutionary theory framework, does not align with the overall basis of Darwin’s theory, as evidence has been shown that not all of this is to true. Numerous organisms are seen not acquiring genetically superior traits passed down from generations that are best suited for their environment, thus limiting their survival …show more content…
Genetic drift affects the genetic makeup of the population but, unlike natural selection, through an entirely random process. So although genetic drift is a mechanism of evolution, it doesn’t work to produce adaptation. This phenomenon are the result of two different causes, the bottleneck and the founder effect. The bottleneck is mostly due to catastrophic environmental events and or human causes like hunting. Which result in a certain species population to become very small, which results in less variation because there are not as many organisms to mate with. This happened to the American bison in the 18th century, when hunting the bison became more popular for their fur and meat, as well as becoming a “sport” for hunting enthusiast around the world. The population of the bison’s by the end of the 19th century went from being in the millions to hundreds. Because of the dramatic decrease in population most of the bison today are genetically very similar because the smaller the population many alleles are lost forever. The founder effect is seen when a small group of a certain species leave their original environment and set up a new colony elsewhere. An example of this occurrence, was the one discussed in class. Involving lizards being taken from their natural habitat to an isolated island. The result of this was a change in genetic makeup for the lizards on the
Scientific explanations are evaluated using evidence from the natural world. By performing experiments, science is a process that uses data and evidence to explain the evolutionary process. There is Constancy and Change in Natural Systems that can be, understood by recognizing patterns and explained through mathematics. As we discussed in class “Science can be considered a form of conceptual evolution where natural selection insures the survival of the fittest ideas”. Those 3 ingredients are heritability, variation and differential success. In order for selection to occur three main criteria’s are necessary in order for a specie to prosper and survive. Without these ingredients a species will have little to no chance …show more content…
Natural selection is known as an evolutionary change through a process of variation in each generation and differential survival of individuals with different combinations of these variable characters. Individuals with characteristics which increase their probability of survival will have more opportunities to reproduce and their offspring will also benefit from the heritable. Over time these characteristics will spread through the population and the chances of survival increase. A selectionist perspective is necessary because the environment does select for characteristics that help an organism adapt to their environment. But there are some events that happen that being well-suited to the environment may not help. The comprehensive evolutionary theory framework, does not align with the overall basis of Darwin’s theory, as evidence has been shown that not all of this is to true. Numerous organisms are seen not acquiring genetically superior traits passed down from generations that are best suited for their environment, thus limiting their survival …show more content…
Genetic drift affects the genetic makeup of the population but, unlike natural selection, through an entirely random process. So although genetic drift is a mechanism of evolution, it doesn’t work to produce adaptation. This phenomenon are the result of two different causes, the bottleneck and the founder effect. The bottleneck is mostly due to catastrophic environmental events and or human causes like hunting. Which result in a certain species population to become very small, which results in less variation because there are not as many organisms to mate with. This happened to the American bison in the 18th century, when hunting the bison became more popular for their fur and meat, as well as becoming a “sport” for hunting enthusiast around the world. The population of the bison’s by the end of the 19th century went from being in the millions to hundreds. Because of the dramatic decrease in population most of the bison today are genetically very similar because the smaller the population many alleles are lost forever. The founder effect is seen when a small group of a certain species leave their original environment and set up a new colony elsewhere. An example of this occurrence, was the one discussed in class. Involving lizards being taken from their natural habitat to an isolated island. The result of this was a change in genetic makeup for the lizards on the