Natural Selection Lab Report

According to Darwin and his theory on evolution, organisms are presented with nature’s challenge of environmental change. Those that possess the characteristics of adapting to such challenges are successful in leaving their genes behind and ensuring that their lineage will continue. It is natural selection, where nature can perform tiny to mass sporadic experiments on its organisms, and the results can be interesting from extinction to significant changes within a species.

The reason for doing this lab is to study evolution using small population of finches on two different islands. I used different charts and graphs to find limitations on natural selection. Then find the effect evolution will have on beak and population over a certain time period. Using three different assignments I have to develop different hypothesis comparing and contrasting the average beak size and population size changing rain fall, beak sizes, population and island size on Darwin’s and Wallace experiments.

Animals fight for survival daily, and sometimes their lives depend on their ability to adapt with their surrounding environments. Natural Selection is the process in which individuals have certain traits that allow

The purpose of this lab is to better understand the process of natural selection and its effects on a population by conducting a stimulation. The stimulation consist of predators (students with either a spoon, fork or a knife) and prey (different types of beans). Furthermore, students will be able to determine how phenotype (bean color and utensil used by the predators) influences natural selection. Students will also demonstrate their quantitative skills by determining the predator survival and reproduction, bean survival and reproduction, and by calculating the total percent of the population. Additionally, students will be able to identify the occurrence of evolution by natural selection after the end of generation three. Moreover, students

The Evolution Lab simulates environmental situations to determine effects on evolution over periods of time. This lab experiments with the evolution of finches on two different islands over 100, 200, and 300 years. By manipulating parameters that influence natural selection, the effects that natural selection have on the evolution process can be studied.

Complete the worksheet writing 100- to 200-word short answers for each question. Format your references consistent with APA guidelines.

This experiment was performed to give a better idea of interspecific competition and intraspecific competition between radish seeds and wheat seeds at high and low densities. By planting two species only pots and two combined species pots our results showed that the radish seeds performed better at both interspecific and intraspecific competitions and concluded that the lower the pot density the more resources and growth. 32 radish seeds were evenly planted in pot A1 followed by 32 wheat seeds planted in pot A2 and 16 of each radish and wheat seeds combined (32 total) planted in pot AB1. We repeated this procedure again but this time planting 96 radish seeds evenly in pot A2, 96 wheat seeds in pot B2 and 48 of each radish and wheat seeds combined (96

The “predators” in this experiment were three different types of tools, a tweezer, a wooden clothespin, and a clothes clip. At the start of the first round, there were ten beans for each different type of bean. Nearly all the white beans were taken out of the first round, only one survived. This was because the white beans were large, non slippery, and easy to catch. Red beans and green beans were not as easy to catch. Based on the data and the graph, the tweezers captured the most beans in this round and the clothes clip had the least (w/ only one white bean).

Natural sources of variation include: mutations, gene flow, and genetic shuffling. Mutations are random changes in DNA that result in beneficial, harmful, or no changes in an organism. Gene flow can also be referred to as migration. It is the exchange of genes of individuals from one population to another. Genetic shuffling occurs in meiosis when alleles switch to create new combinations of genes. The steps of natural selection are overproduction, variation, competition, and selection. Overproduction is important because it keeps the species from becoming extinct and allows for more variation in offspring. Variation is what can either help the organism have a higher chance of surviving or could lower the chance of surviving.

1. Did the construction of the phylogenetic tree based on the 14 living Caminalcules change the way you would group Caminalcules species in your taxonomic classification (chart)? What does this suggest about classification based on strictly of similarity versus evolutionary relationship?

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

Natural selection- in a simple mechanism that cause species to change overtime. Natural selection have been broken down into five basic steps as V.I.S.T.A.

Predators and prey are organisms that interrelate, and they can influence on another’s success in reproduction. Predators are organisms that consume other organisms-their prey. These two organisms evolve together. They live in an environment where they must develop certain adaptations to survive. When an adaptation is developed, it gives an organism certain physical characteristics that create an advantage for survival and can come to dominate in a population. An adaptation aids survival by either decreasing a prey's chance of being eaten, or by increasing a predator's chance of obtaining food to survive and reproduce. Predators must fight for food. They face density-independent

Natural selection is considered one of the most important processes for a variety of species and the environment which allows the fittest organisms to produce offspring. To prevent a species from extinction, it is necessary for them to adapt to the surrounding environment. The species which have the ability to adapt to new surroundings will be able to pass their genes through reproduction. Within the process of natural selection, it is possible for the original genetic make-up of a species to become altered. The team will report on the different processes of basic mechanisms of evolution, how natural selection results in biodiversity and why biodiversity is important to continued evolution. The sources of genetic

Biodiversity presents occurrence of variety of species and their natural community in which they live. By the definition it is “The degree of variation of life forms within a given species, ecosystem, biome, or an entire planet. It is a measure of the health of ecosystems and is in part a function of climate.” (Rutherford) Ecosystem is on the other hand, “ community and its abiotic environment”( Rutherford). Biodiversity exists in every ecosystem, weather it is big one, or just ecosystem of one garden, it has the same importance because without it nature loses its ability to perform major functions needed for life on Earth, as it is oxygen production. Trough this investigation, two different ecosystems will be explored and