This unit was about constant change. Variation is any difference in traits within a population such as height or eye color. Variation exists because of crossing over, meiosis, mutations, and sex. Artificial selection occurs when humans select traits from a population's variation that they want, and only mate individuals with those traits. Darwin discovered that evolution is caused by natural selection. He came p with for observations and two conclusions explaining how populations can change or evolve over time because of natural selection. A gene is a section of DNA that gives instructions for a trait. An allele is different variations of a gene that give different variations of that trait. Genetic variation is stored in the gene pool, and these gene pools can change over time. Allele frequency is how common an allele is in a population. Evolution acts on a population, as natural selection acts on an individual. A species is a group of individuals that can reproduce and have fertile offspring. Speciation is the rise of two or more species from one existing species. Embryology is the similar stages of embryo development that suggest common ancestry. Gene flow is moving alleles from one population to another. Natural selection selects for traits advantageous for survival. The 4 eras are: Precambrian Era, Paleozic Era, Mesozoic Era, and Cenozoic Era.
I want to learn more about the rate of evolution because it is very slow for some populations and not for others. I would like to know how to increase the rate of evolution because some species have a very slow rate of evolution. Since my reflection on Unit 7 ( https://monicabio9.blogspot.com/2017/03/unit-7-reflection.html ) I have tried to focus more on not being so passive agressive. I have tired to consider both sides of the argument and not be mad about which was the argument went.
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| This is a picture of my graph from the Hunger Games Lab. It shows the gene flow in the population. |
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| This is an image of gene flow. It shows how the alleles move from one population to another. |
I want to learn more about the rate of evolution because it is very slow for some populations and not for others. I would like to know how to increase the rate of evolution because some species have a very slow rate of evolution. Since my reflection on Unit 7 ( https://monicabio9.blogspot.com/2017/03/unit-7-reflection.html ) I have tried to focus more on not being so passive agressive. I have tired to consider both sides of the argument and not be mad about which was the argument went.
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