ipl-logo

Unit 2 Evolution Research Paper

665 Words3 Pages

BSC 1020 – Reflection Paper Unit G

Evolution and its Processes

This unit covers the theory of evolution, its mechanisms, the modern synthesis of genetics and evolution, and classification of species. The first chapter describes the history involved in Darwin’s theory of evolution. It talks about the evidence that supports evolution like the fossil record, biogeography (geographical distribution of species), comparative anatomy, comparative embryology and molecular biology. These collections of evidence help explain how species evolve from a common ancestor with gradual changes over time due to natural selection.
Natural selection states that certain traits of an organism inside a population are better for adapting to the environment. …show more content…

Scientists focused on the gene pool of populations to account for the different traits being exhibited by members in the population. The different genes in the gene pool account for the variation in a population and mutations account for different alleles that an organism may have. When gene pools are changed by some sort of event or action, they are referred to as mechanisms of evolution. Genetic drift, the bottleneck effect, and gene flow are examples of mechanisms of evolution.
The second chapter of this unit talks about how species originate and how they are classified. Organisms are split into different species when their genotypes and phenotypes differ and they cannot breed an offspring capable of reproducing. Reproductive barriers and prezygotic barriers are two types are what prevent two different species from interbreeding. Speciation, the split of an organism into two different species over time, in different ways, allopatric speciation (geographical barrier), and sympatric speciation(reproductively isolated in same

Show More
Related

  • Chhihua Unique Species

    394 Words  | 2 Pages

    The Scorpihuahua is an excellent example of two very unique species, the Chihuahua belonging to the Canis Lupus familiaris and the Scorpion being an Arachnida, which was created through artificial selection experiments which wanted to assess the limits as just how far hybridization can actually occur. Although the Scorpihuahua was difficult to create, as the fitness level of the organism was originally low, the hybrid has truly evolved into an organism that is very much able to defend itself and successfully procreate. The Chihuahua organism, a very small animal, seemed to have trouble defending itself in the harsh conditions in which it must survive, and the Scorpion organism, a venomous walking Arachnidan, was faulted in its inability to protect itself against predators much bigger than its very small self. The hybrid manages to create a much more fit organism that the Scorpion or Chihuahua could ever be alone. The Scorpihuahua has the benefit of being able to move at a faster speed than the original Scorpion organism, and has the benefit of being able to deliver a poisonous sting should it ever need to defend

    Read More

  • AP Biology Chapter Summary

    1515 Words  | 7 Pages

    Biology, the study of life and living organisms, is complex and encompasses a multitude of theories and ideas. In AP Biology, the first unit covered was evolution. Chapters 29, 31, 39, 40, 41, 42, and 43 in the textbook, Campbell’s Biology in Focus, not only discusses the four main ideas of biology: evolution, energy, information, and systems, but it also gives examples of each in order to help guide the reader’s understanding of the concepts. The first big idea of AP Biology is: “the process of evolution drives the diversity and unity of life.” Chapter 39 in the textbook encompasses this main idea through discussing natural selection and genetic diversity.

    Read More

  • Nonhuman Primate Evolution

    310 Words  | 2 Pages

    As seen by looking at the geologic time scale it is clear that different environments allow for different evolution to occur. The three theories

    Read More

  • Primate Facial Species

    481 Words  | 2 Pages

    Near the junction between a single ancestral species branching off into two distinctive species, there will undoubtedly be large similarities between the two species. These similarities are expected to diminish over many generations as the two species become reproductively incompatible. However, If we consider the "grey area" that is the time between two strains of a species becoming reproductively distinct, we can why it is so advantageous for distinguishable facial features to arise; distinct facial features serve as a form of genetic authentication that allows identification of individuals with certain genes. These are the exact genotypic traits that must be propagated in a subset of the ancestral species for a budding new species to adapt to a new environment and/or escape the competition for resources from the original ancestral species by developing a niche. Hence, two characterizing features of primates with distinguishable facial features are genetic diversity and capacity for adaptive radiation.

    Read More

  • Long Argumentuments: Shermer's Stand And The Long Argument

    701 Words  | 3 Pages

    Due to the aforementioned factors, we are tempted to see the species of today as a monument of the theory of evolution, but it actually undercuts the facts of evolution. Furthermore, a number of misconceptions have erupted throughout the years for the sole reason of not having an appropriate explanation for the facts of the theory of evolution. We are forced to accept wrong notions for us to be able to fully understand the said

    Read More

  • Rock Pocket Mice Case Study

    1080 Words  | 5 Pages

    Materials: 1. Genetic code chart 2. The Making of the Fittest: Natural Selection and Adaption Student Handout

    Read More

  • Habilis Human Evolution

    893 Words  | 4 Pages

    The physical differentiation in these four species highlight evolution, and in

    Read More

  • Biological Race Essay

    1769 Words  | 8 Pages

    There are many versions of biological racial perspective, for the purpose of this research, two different approaches were presented by the

    Read More

  • What Are The Arguments Against Darwin's Theory Of Evolution

    1126 Words  | 5 Pages

    Introduction The theory of evolution has been discussed, evaluated, and researched many times since the theory was first brought to light. Darwin’s theory of evolution is said to be divided into two parts, common decent and natural selection (Bouzat, 2014). Many research papers agreeing with Darwin’s theory comment on the diversity of a species and how they have descended from one common ancestor. Natural selection is a process in which species that are better adapted to the environment tend to survive and reproduce (Dictonary.com).

    Read More

  • Darwin's Theory Of Evolution Worksheet

    2767 Words  | 12 Pages

    Charles Darwin is famous for his theory of evolution through natural selection. Darwin's theory points out that the life of living organisms is related and has descendants from a common ancestor like birds and bananas, fishes, and . Q. Nature has a way of causing organisms that inherit advantageous traits to survive and reproduce more successfully than the ones that don't. This process is known as. Acquiring knowledge of natural sciences specific aim 2: Darwin s theory of evolution worksheet answer key keywords: Chapter 15 darwin s theory of evolution worksheet answer key keywords: The Voyage Of The Beagle.

    Read More

  • Evolution Lab Report

    189 Words  | 1 Pages

    Evolution has occurred throughout time within living organisms we can trace this by each species diversity. Variation gives us a possible explanation of how evolution occurs in living organisms. This can lead us to uncover the reason, why certain species produce more offspring than others and pass on their traits. However, natural selection can impact species driving them into extinction or increase diversity; it exposes evolution in front of our eyes. Also, adaptive radiation can occur within the species and can be seen by their physical appearances and adaption to their environment.

    Read More

  • Pros And Cons Of Pluto

    1068 Words  | 5 Pages

    Does Pluto have the characteristics needed to be considered a planet? Throughout this essay, I will explain how things should be classified when it comes to speaking in terms of the universe. Is there criticism that was merited against in such terms, models, or ideas, and does it support the method of us understanding the universe? This conversation is focusing on to what extent the class of the cosmology became successful.

    Read More

  • The Idea Of Population Thinking Was Created By Ernst Mayr

    1779 Words  | 8 Pages

    In the 20th century, the history of evolution developed further into the theory that over time, species change and the main reason for this is natural selection. Natural selection happens when organisms more adapted to their environment have a higher survival rate overtime, and with this, their genes pass through generations as they reproduce. These three types of thinking further expand this theory, fitting into the history of evolutionary biology, by depicting the history of organisms and species within a population over time. Despite each way of thinking being different, they all classify organisms, as well as shine light upon evolutionary changes that happen over the years, bringing new information into the history of evolution. Therefore, these ways of thinking show the process of natural selection first hand, the origins of certain species, and their relatedness as they developed from their earlier forms, which is the main idea of evolutionary

    Read More

  • Animal Selection Vs Natural Selection

    324 Words  | 2 Pages

    vNatural selection is the most popular theory by evolutionist, Charles Darwin. This theory is the belief that evolutionary change comes from organisms adapting to better fit with their environment, generation to generation. The variations that occur, give the organism a better chance of survival, ensuring that they can reproduce and pass on the trait to further generations. Eventually the variation will spread throughout the species. Natural selection can however be limited by several factors These factors include, the variation gene not being available, history not allowing the variation to develop or the trade-off of a variation creating a different problem for the animal.

    Read More

  • Theory Of Evolution Essay

    1006 Words  | 5 Pages

    Many people believe that if you cannot see something, that something does not exist. By something I mean God. Those who discard the thought of a Creator then turn to science to provide evidence for our origins. The theory science puts forth is called evolution. What is evolution?

    Read More

More about Unit 2 Evolution Research Paper

Open Document