Natural Selection Biology

As a naturalist, Darwin discovered how the type species interact differently from the species from other locations that were nearby. That discovery concluded to be the proposal of “natural selection,” which is a principle that explains that nature selects the

Natural selection is the process in which heritable traits that make it more likely for organisms to survive and successfully reproduce become more common in a population over successive generations. Each of us individuals is specifically shaped and formed by our own genetic pattern. We inherit this pattern half from are mother and half from are father. The cause of this is the proximate cause that led it’s phenotype to ultimate causes. Much of we know today about evolution derives from the late great pioneer, Charles Darwin. Charles Darwin was an english naturalist that even from an early age was very interested in outdoor pursuits. Early in his prep career his father tried sending him to the University of Edinburg to pursue his medical

Charles Darwin first suggested how evolution occurs in the natural selection process. Natural selection is the survival and reproduction of individuals with different phenotypes resulting in interactions with the environment. Genetic drift and gene flow can contribute to evolution too. Genetic drift is a random change in allele frequencies of a population. Gene flow is the movement of alleles between two or more populations. This is how populations evolve. In this lab, I completed an activity about Darwinian snails. A biologist named Robin Seeley suspected that New England’s periwinkle snail population was evolving due to predation by green crabs and she compared the old shells of these snails to the new ones. Robin Seeley recorded her results from the shell measurements to find the difference. It turned out that the range in shell thickness was different from 1980 and 1871. We completed a simulation online about the Darwinian snail population and the green crab population. This lab taught me the roles of mutations in introducing new genetic variation within a population! Populations evolve by the means of natural selection. I now understand the role of genetic variation, inheritance, and selection the evolution of a population. Being aware of the great diversity of living things on earth is just as important as knowing the long process of evolution. This lab was more than worth

Through this, I have learned about evolution. I find it shocking that one DNA sequence is what differentiates certain species from others. I have learned about switches, which takes a big role in the makeup of organisms and its diversity. Between Darwin’s knowledge and today’s knowledge, I am beginning to make connections about

Biology plays a part in every single aspect of what is going on in the world, both on land and in the water. Natural selection is a huge deal in biology and is the process where organisms better adapt to their environment to better survive and reproduce. Evolution by natural selection has been going on forever now and it is impressive just to what extent a species is capable of evolving. An article that greatly explains how amazing the ability to adapt is called, “Against the Tide: A Fish Adapts Quickly to Lethal Levels of Pollution.”

At the age of 11, my family and I visited The Museum of Natural History in New

Darwin: Well in that case I suppose that it could affect natural selection in that if a food source or necessity is changed that it could encourage recessive phenotypes but overall the ones best suited for the environment would be able to survive.

Evolutionary thought and research has come a long way in the last few decades. While several factors have been identified as contributing to species evolution (Huxley 1942), natural selection is widely accepted as the main and strongest evolutionary force. However, Gould and Lewontin (1979: 581-598) argue there is a danger in trying to explain all evolution using an adaptationist programme where selection is the go to answer, even to the exclusion of other possibilities

New modifications create new species that have different advantages to survive in various environments. Through generations of time a species can develop genetic advantages to survive in its environment and reproduce more successfully than its surrounding organisms. While new species are formed, others are extinct and this can affect all other organisms because that may be its prey or predator. The new species are likely to be stronger, but more complex. Once a new species is formed, it is usually because of the pressure the environment put on it to survive and it is unlikely for the old species to reappear. The extinction of an old species is due to natural selection and is most likely permanent. A similar species could appear in a different landscape, but it will not be identical. For example, Darwin saw this with different species of finches on different islands. This is called parallel succession. The species can still migrate to new geographical locations, but it is not likely they will survive unless their bodies adapt. Descent with modification makes all species related to one another and Darwin made a family tree where this can be visually seen. This all ties into the study of biology because the functions of different organisms can be seen worldwide through their variations while undergoing descent with

Understanding good design requires addressing the question of what units undergo natural selection, thereby becoming adapted (Shelton, 2014). There is a natural connection between the formal Darwinism project (which aims to connect population genetics with the evolution of design and fitness) and levels of selection issues, such as natural selection acting on individuals, or on populations (Shelton, 2014). Darwin offers contradictory ideas of thinking concerning these levels of selection (Shelton, 2014).

Survival of the fit(-test) ties together with Darwin’s theory of natural selection. All species evolve, as it is usually the only way to survive. Some species evolve to better themselves, such as the sea slug, who steals genes from its food (i.e. algae genes would allow it to live off of sunlight for a few days). Other species evolve to survive and get more food, such as Galapagos finches, who evolved to have smaller beaks to eat smaller seeds (this is because larger birds with larger beaks ate all of the bigger seeds, thus causing an evolution). Different species evolved to protect themselves, such as blue mussels, who thicken their shells when predators come close (mostly Asian

Background Despite having studied a range of scientific topics, I have developed a strong interest in biology over the course of my studies to date, particularly ecology and evolutionary biology. This interest began as a result of engrossing palaeontology modules I participated in during the last two years of my undergraduate degree, which covered the history of life from its earliest forms over half a billion years ago right up to the modern era. This study of the change of life over vast scales of time proved fascinating. In addition, the zoology module I was taking at the same time covered the biological aspects of evolution (as opposed to the palaeontology module's geological focus), which strengthened my interest. Although I specialised in earth science during my undergraduate, I took some years out to consider my future plans, which led to my return to university to pursue a Master’s degree in evolutionary biology.

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 my own words when I think of natural selection I think that it means that the fittest survive. Also that when the fitness survive they are automatically given the opportunity to keep their genes going. This process of the weak dying off and the strong moving on is what makes everything living thing evolve into the best. The next force of evolution is genetic drift I think that this means that just sheer chance the weak genes actually move on and some strong genes do not move on. The third force of evolution is gene flow and I describe this force as a change in a group because of certain genes that came into their group from migration or immigration. The last force is mutation and I describe it as a change in the gene that results in different

The biological topic of my choice is human evolution and natural selection. These topics ties into our class lectures because we have talked about evolution and Lamarck's and Darwin's logic. Lamarck's logic was based on the inheritance of acquired characteristics. He believed that organisms characteristics were inherited during our lifetime. We discussed Lamarck's logic in class, and we learned that Lamarck was not completely right. We also learned that Darwin used variation in the organism's traits with features in their environments, and he believed that within a population there can be a slight different in appearance and function. This article interested me because the article explains how a slight different in nose shaped can have a different