What is Natural Selection and How Does It Work?

What is natural selection, and how does it work?

By: Ian Thomas Dyck Epp

Table of Contens

Natural Selection Artificial Selection What are Mutations and Point Mutations Charles Darwin Glossary Sources 2

Natural selection.

Natural selection is a process in which animals that are better adapted to their environment to survive. Those that are less adapted to their environment are less likely to survive and have offspring, those animals usually become extinct. Some adapt over time and immune to different bug sprays or they can camouage. The two main concepts of natural selection are artiďŹ cial selection, mutations and point mutations.

Evolution of a moth.

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Artificial Selection An example of selective breeding is a farmer growing cabbages. He makes you ďŹ nd a cabbage that is better than the others, like thicker leaves. He only uses those cabbage seeds to plant, then all of the cabbages have big thick leaves.

Selective breeding is when one human takes only the best breed and the rest are killed, over time this will create a naturally superior vegetable.

Farmers carefully breeding corn and wheat.

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What are Mutations and Point mutations?

Mutation is when DNA is not copied correctly when something is reproducing. Sometimes mutations are good, some mutations are bad. An average human has about 70 Point mutations in their DNA. Point mutation is a small part of a big mutation.

A mutation could give you different appeared appearances or It could physically help you. it could make you run faster so you could get away from the predator that's trying to eat you or it could camouage you. Example of the mutation is when a bug that was purple has an offspring that was green. That green bug is more likely to survive than the rest of his family because he can camouage like a leaf.

A mutation.

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Charles Darwin Charles Darwin went on a trip to document different types of life around the world. Charles Darwin was most famous for his research in the Galapagos Islands. Charles Darwin noted that the finches on each island had slightly different beaks. One step relied on bugs to eat on their island had slightly longer and slimmer beaks. The ones that relied on cacti had blonde but sharp strong beaks.

He figured out that he had evolved to so that they can live on the island without starving. He called this natural selection. Charles Darwin also founded the theory of evolution.

Darwin’s finches.

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Sources Stated clearly https://www.youtube.com/watch?v=0SCjhI86grU https://www.youtube.com/watch?v=GhHOjC4oxh8 https://www.youtube.com/watch?v=lIEoO5KdPvg http://statedclearly.com/videos/

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