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Download What is DNA?
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What is DNA? So, DNA….. • Deoxyribonucleic Acid • Codes for proteins • Proteins make us who we are • DNA is like the instruction manual for you. Where does our DNA come from? • Half of every strand of your DNA comes from your mom and half comes from your dad. • It doesn’t matter who you look like more, you are 50/50 mom and dad! What if there is a problem with your DNA? Any change to your DNA is called a MUTATION Mutations can be caused by: • Environment • Random copying errors Mutations can occur: • During embryonic development (result in change in offspring) • During your lifetime (usually result in cancer) FACTS: • Everyone has mutations!! • Most mutations are uneventful and you never know they are there! • Some mutations are negative, and have some negative impact on the organism • Some mutations are beneficial and help the organism to be more successful If the mutation is Beneficial… • Whether a trait is beneficial is usually based on the environment • Organisms do not get to CHOOSE their genes, and they do not get to CHOOSE their mutations. It is totally random • BUT, if your mutation makes you BETTER SUITED TO YOUR ENVIORNMENT, that species is more likely to EVOLVE The main theme to Evolution is: Better suited individuals are more likely to survive and reproduce than less suited individuals are. Simplified as Charles Darwin’s theory of Natural Selection, or SURVIVAL of the FITTEST Mutations: The Science of Survival You Tube Video – 48:08 • https://www.youtube.com/watch?v=qVmusHZ tQms#