Natural Selection

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Poll

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Who am I feeling like now?

1. I can't stop Dancing Tortoise

2. Hungry in Love Tortoise

3. Sweet Flower-Power Tortoise

4. I'm not impressed Tortoise

5. Leave me alone Tortoise

6. Is this really happening Tortoise

7. I'm so excited Tortoise

8. Let's have a party Tortoise

9. I need more sleep Tortoise

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What is Natural Selection?

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Quiz

Checkpoint Charlie

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The idea that children of parents look and behave
slightly different from their parents and each other is
partially due to ________________.

an RNA sequence in the cytoplasm.

DNA mutations.

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Scientific evidence from the Study of Fossils, Genetics,
Comparative Anatomy, Math, Biochemistry, and Species
Distribution all provide evidence that we are all related. This is
known as Common Descent.

True

False

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Charles Darwin, who discovered natural selection,

found species of plants and animals unique to the Galapagos Islands, but they did not look
or behave similar to other creatures.

found species of plants and animals unique to the Galapagos Islands, but they often
looked and behaved similar to creatures on nearby continents.

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Darwin saw something very surprizing about the island animals
and how they adapted. What was it?

Animals adapted in all the same way from island to island.

Animals adapted just like the animals on nearby Ecuador.

Animals on the separate islands adapted specifically to the island on which they lived.

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Darwin used his previously acquired knowledge to come to his
conclusion about the island animals. He knew that for
thousands of years humans have been selecting desirable traits
and breeding plants and animals according to those desired
traits. What is this thing called that humans have been doing?

Natural Selection

Artificial Selection

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Usually, organisms in the wild don't have the assistance from
human beings. They have to rely on their own abilities, directed
by their genes. Darwin called this ability to adapt Natural
Selection. Which statement is true?

Plants and animals with the most desirable traits are those who are able to
reproduce and pass their traits on to the next generation.

Those who are able to reproduce and pass their traits on to the next
generation is just the "luck of the draw." The luckier organisms pass on their
traits to offspring.

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Which statement is true?

Negative traits add up in populations, while successful traits are easily
discarded.
Positive traits add up in populations, while negative traits are discarded.

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