Search Results:
[DOWNLOAD] The Making Of The Fittest Natural Selection Answer Key
Different mutations in the same gene, or even mutations in different genes, can result in the same phenotype. While mutations can be random, natural selection is not random. Selective pressure depends on the environment in which an organism lives....[FREE] The Making Of The Fittest Natural Selection Answer Key
A, MS. C, MS. B, MS. A, HS. C, HS. B, HS. C AP Biology —13 1. A, II. Cunningham, Environmental Science: 4. Published August Updated October www. The table below lists suggested pause points, indicating the beginning and end times in minutes in...
- The dark coloration in the rock pocket mouse did not be said of light-colored mice on dark-colored substrates; they stand out whether or not they are in shadow. Rather, a random mutation proved adaptive to the mice living in areas of dark- colored volcanic rock. Because dark coloration was helpful in this environment, more mice with the dark-color mutation survived to reproduce, thus passing on their genes including the mutation for dark-colored fur to the next generation with greater frequency than those without the mutation. In a population of mice living in areas of light- colored rock, the mutation would not be adaptive and would therefore not persist. In-Depth Film Guide www. The peppered moth can be light colored or dark colored. Dark-colored peppered moths became more common in Britain following the Industrial Revolution, in part because they were able to avoid predation by blending in with soot-covered trees when resting.
- Students collect data, prepare graphs, and answer questions that apply the concepts introduced in the film. Michael Nachman and his colleagues to illustrate the Hardy-Weinberg principle. Students use the data to calculate allele and phenotype frequencies and then manipulate selection values using a spreadsheet. The lesson reviews the key concepts and causes of evolution, including mutation, gene flow, genetic drift, and natural selection. It features multiple clips from lectures on evolution see below. Sean B. Carroll media. Carroll, a leader in the field of evolutionary developmental biology or evo devo , explores how key developmental genes, natural selection, and time fuel the evolutionary process. Evolution: Fossils, Genes, and Mousetraps, by Dr. Ken Miller media. Ken Miller discusses the controversy surrounding the teaching of evolution and presents compelling evidence for evolution and reasons why intelligent design is not scientific.
(PDF) The Making Of The Fittest: Natural Selection And Adaptation | Imina Obade - 1medicoguia.com
The presentation features Dr. Stickleback Environment www. Some groups kept their spines to use against predatory fish, such as trout. Others lost their spines, perhaps to evade aquatic insect predators. Fossil Record of Stickleback Evolution www. In a short time span in evolutionary terms—about 10, years—we can see the size of the pelvic spines dramatically reduce in the fish population. This particular fossil record is remarkably complete with nearly year-by-year detail, which includes documentation of intermediate forms. We note the key concepts covered by each question here. Students may also mention that the change is random, but this is not necessary for a complete answer. Mutations can be nonrandom, but they are not caused by selective pressure. Students may also mention that environmental selective pressure acts on the phenotype that results from the mutations but does not cause the mutations or the phenotype to appear.Natural Selection-the Making Of The Fittest | 1medicoguia.com
Key Concepts B and G Is the following statement true or false? Students may also mention that the dark-colored volcanic rock played a role in making dark-colored fur and the corresponding alleles or mutations favored, but this is not necessary for a complete answer. Key Concepts B, C, and G Explain how the environment plays a role in changing the frequency of a mutant allele in a population. Some traits are more advantageous or deleterious in certain environments than others."The Making Of The Fittest: Natural Selection And Adaptation" Minute Clip On Vimeo
As a result, organisms with traits and therefore the mutations that result in those traits that make them better suited to a particular environment are more likely to have offspring and pass on their genes. Over time, this results in an increase in the frequency of mutations that encode beneficial traits for that environment or, conversely, a decrease in the mutations that influence deleterious traits in that particular environment. Students may provide an example to support their answers such as the rock pocket mice from the film , but this is not necessary for a complete answer. Key Concepts C, D, and F As you saw in the film, rock pocket mice evolved to have dark-colored fur in certain habitats. In three to five sentences, explain how this trait increased in frequency in the population. As a result, more of the dark-colored mice survived and reproduced.- This caused the population of rock pocket mice to evolve to have more individuals with dark-colored fur. Key Concept F Near the end of the film, Dr. A complete answer for this question should include the idea that natural selection acts on traits, which results in the mutations for those traits being more likely to be passed on to the next generation. However, it does not actually cause the mutations to appear in the population; many mutations appear randomly. Paraphrasing the above quote is not sufficient for a complete answer. Key Concepts D and E Suppose you are studying a recently discovered population of rock pocket mice with dark-colored fur that lives on volcanic rock. You take a DNA sample from a member of this new population and determine the DNA sequence of a gene known to play a role in fur color. The sequence you get is identical to that of the same gene in another rock pocket mouse population with dark-colored fur that lives on a different patch of volcanic rock.
No comments:
Post a Comment