What is the main idea of evolution?

• All life descended from a common ancestor

• Humans came from apes

• Animals adapt based on needs

• Only the strongest and most intelligent organisms survive

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Which of the following are types of evidence for the theory of evolution? (There LOTS of answers, choose ALL that apply!)

• homologous structures

• study of DNA

• fossil evidence

• embryology (early development)

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A homologous structure is.....

• A structure that is a remnant from our ancestors that provides no function.

• A structure that is similar in different organism, but may have a different function

• A structure that is very different in different organisms, but has the same function

• A structure that is essential for evolution to occur

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Which of the following two (2) diagrams show only homologous structures?

• 
• 
• 
• 

The pelvic bone of whales is not needed for movement within the water. This is an example of a(n) ______________ structure.

• vestigial

• analogous

• homologous

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The picture shows Hemoglobin’s Amino Acid Sequence in Different Species. When compared to the HUMAN, which species is MOST DISTANTLY RELATED based on this chart?

• Chimpanzee

• Rhesus Monkey

• Horse

• Kangaroo

• Gorilla

The picture shows Hemoglobin’s Amino Acid Sequence in Different Species. When compared to the HUMAN, which species is MOST CLOSELY RELATED based on this chart?

• Chimpanzee

• Rhesus Monkey

• Horse

• Kangaroo

• Gorilla

Fill in the blank: When it comes to comparing DNA and protein structures in species, in general, the more similar the DNA, the more _________ related the species.

(choose: closely or distantly)

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How do the similarities in early development (embryology) support the theory of evolution?

A fossil of an extinct dinosaur is found and the anatomy of the fossil shows similarities to that of a bird. What could this mean?

• This is purely by chance and isn't significant
• The extinct dinosaur and modern bird share a common ancestor
• All dinosaurs evolved into birds and that's why there aren't any dinosaurs alive today
• Dinosaurs choose to fly, and evolved into birds to escape predation and capture food

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