9. Evolution: How Does It Happen? NQ – Video

Video Link: https://www.youtube.com/watch?v=WMUsKEHn0TE

9. Evolution: How Does It Happen? NQ
Evolution and The Flow of Information For a number of reasons and misconceptions the biological topic of Evolution has become controversial. Understanding how evolution happens and how its mechanisms result in biological change is important to life itself. Given biological life, there will be change. That is a fact. A fact as observable as the fact that the Earth is not the center of the Universe or that the Earth is round. Why is the topic of evolution still controversial? What is a Theory? What are the facts/? How does evolution happen? Most of the species that have existed on Earth are now extinct. How do new species form from existing ones? This lecture first puts the concepts of evolution into context. The mechanisms that result in genetic variation are many and result in both large and small changes to the genome. Therefore variation is in the population already. Each of us are different, in some ways that we can see (ie physically) and some way we cannot (ie susceptible or resistant to diseases). Selection pressures favor certain changes to persistent in populations. The experiment by Salvador Luria demonstrates experimentally that evolution occurs and shows how it works. That experiment also indicates how evolution works on all living organisms, as shown in the experiment on fruitflies and the ability to survive without food, or flower color and pollination. These kinds of changes result in recent new species, like the new salamander species in the San Joachin ...From:Albert KauschViews:1 0ratingsTime:01:45:39More inScience Technology

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9. Evolution: How Does It Happen? NQ - Video