. Why does (or doesn’t) the frequency of a physical trait change in a rabbit population in different environments? c. This is an important investigation as understanding how populations are affected by different traits helps to understand why certain species thrive in an a certain an environment and why others don’t. This is an interesting investigation as there are no predators in this investigation, the rabbits are competing for food and that is why they are dying at an alarming rate.…
Evan Johnson August 16, 2017 AP Environmental Science Period 5 Summer Assignment 1. A Panamanian town known as El Valle de Anton, used to have an abundance of a species called the golden frog. Then, when humans began migrating from region to region, the spread of a fungus called Chytrid began to take shape. As the fungus spread, the amphibian population began to dwindle. El Valle de Anton is important because it shows how a mass extinction can occur from the spread of a fungus, all because of human travel.…
Erin Allbritton BIO103 3/2/17 Professor Van Breukelen Chapter 5-Ecosystems and Living Organisms 1. How do biologists define evolution? Biologists define evolution as the cumulative genetic changes that occur in a population of organisms over time. 2. What are Darwin’s four premises of evolution by natural selection?…
In a perfect world, evolution would vote against all of the disease and harmful genes that ever existed in humans and other life-forms. After millions of years of selective processes geared toward survival, why is surviving still such a struggle? Dr. Sharon Moalem’s Survival of the Sickest deals entirely with the study of evolution and a variety of theories related to how humans, genes, microbes, viruses, and animals have evolved to survive through mutation and natural selection. Each chapter begins with anecdotes that lead into a well-researched collection of evidence and theories related to different aspects of evolution. First, Dr. Moalem covered the history of hemochromatosis, a disease where too much iron builds up in the blood of the…
Question 1. What were the main findings of the ENCODE project? Only a small percent of the 3.2 Gb human genome encodes for genes but much of the remainder was chalked up a junk. However, the ENCODE project suggests that up to 80% of the genome consist of various active regulatory, and structurally significant regions. Question 2.…
The first way bacteria can become genetically diverse is through mutations. A mutation is a process that changes a DNA sequence. This change can be passed on to future generations when the bacteria multiply. Though mutations are rare, bacteria can change quickly because they multiply rapidly in large groups.…
Mutation are genetic variables in a population. Most variations are neutral and have no impact on an organism survival accumulating naturally over successive generation in what known as genetic drift (the effects of which are far more noticeable in smaller variation). If a genetic variation helps the organism, then more of that species will survive and it will become the main species. If the genetic variation does not help the species, then it will die down. Traits like zebra hoofs, bat wings and shark fins are all features that helps the species.…
The medical field has evolved a lot since the 1950’s, nobody could argue against that. We’ve sent people into space, cloned organisms, and discovered a lot about how the human body works. Every one of those momentous discoveries was helped along by the discovery of “HeLa” cells. HeLa cells are named after a woman named Henrietta Lacks who died in 1951. She was not a genius researcher, nor was she a doctor.…
The main idea behind update was integrating the latest achievements and understandings from biology in the original evolutionary framework. But it was not the last update. These years, a new group of evolutionary biologists is pushing for further developments in the evolutionary theory.…
Overtime, organisms with the favorable genes would increase while organisms without the genes would decrease, causing the population to eventually change (allele frequency would change so that there would be a larger concentration of the selected allele). For example, dogs have evolved through artificial selection. People who want pet…
Measurable Outcomes 1. Describe and demonstrate knowledge of modern evolutionary synthesis, natural selection, population genetics, micro and macroevolution, and speciation. I learned about the speciation of animals in Module 3 and in Module 4 I learned about modern evolutionary synthesis, natural selection, population genetics, and mirco and macroevolution. I was able to learn all this information due to the chapter 46 and chapter 47 notes, the online textbook, and the PowerPoint notes. This along with using reliable websites and articles is how I gathered my information on the concepts.…
Page 1 : http://mw2.concord.org/public/part2/intromacro/page1.cml 1. The individual DNA strands, which are macromolecules, are seen most clearly at 10 to the power of (a) -3 (b) +4 (c) -8 (d) -23 My answer is (c) (2:16:56 PM) 2. How many powers of ten are there between the DNA strands and you?…
As can be expected, both natural selection and mutation are explained in this section of the Framework. The importance of knowing evolution, simply put, is that it “explains the diversity and unity of life” (AP Biology Curriculum Framework, n.d., p. 4). By knowing evolution, one can understand why and how all life has become what it is today. To comprehend the “driving force” behind evolution, one must be familiar with natural selection, which allows individuals with conducive traits to pass their traits onto the next generation. Finally, to cognize how different traits form, one must know of mutations and how they “can be positive, negative, or neutral” (AP Biology Curriculum Framework, n.d., p.51), thus allowing natural selection to eliminate deleterious phenotypes caused by negative changes to the genotype.…
Ever since the beginning of time, natural selection has shaped our world. Natural selection, (also known as evolution), is the process of living organisms adapting and changing to survive in their natural environment. Many of the species that we know today have been involved in the process of evolution. Species don’t evolve like a flip of a switch, but are constantly evolving over a long period of time. As Darwin states, “Evolution occurs every 5,000 years”.…
In this lab, we used computer simulations to investigate about the forces of evolution. Evolution is when alleles changes over time in a population. There are four major forces of evolution. These forces may increase or decrease gene diversity, meaning they can introduce new alleles or extinct some alleles. One of the forces is mutation.…