Evidence of Evolution

What is a scientific theory?

• A type of plant

• A story about animals

• An explanation tested and supported by evidence

• A guess about the natural world

Why do embryos of different species look similar?

• They are all the same species

• They have a common ancestor

• They live in the same place

• They eat the same food

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

What are homologous structures?

• Structures that are not found in animals

• Structures that are exactly the same

• Structures that look different but have the same function

• Structures that are similar in structure but different in function

Tags

NGSS.MS-LS4-2

What is a vestigial structure?

• A structure that is only in young animals

• A structure that is found in plants

• A structure that no longer has a useful function

• A structure that is very important

Tags

NGSS.MS-LS4-2

How does DNA provide evidence for evolution?

• It makes animals grow faster

• It helps animals find food

• It shows relationships between species

• It shows how animals look

Tags

NGSS.MS-LS4-2

NGSS.MS-LS3-1

Biological Evolution is the idea that species change over time. Those born with traits best suited for an environment will survive the best and reproduce most (ex. Long neck giraffes survive because they can reach food).

Who is the father of evolution?

• James Watson

• Gregor Mendel

• Charles Darwin

• Francis Crick

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1

NGSS.MS-LS4-4

Match the following Evidence of Evolution

• Humans and Chimpanzees

• Similar DNA = Close Relatives

• Wisdom Teeth

• 
• Human forearm, bat's wings, dog's legs

• Analogous Structure - Same function, different structure

• Bird wings and insect wings

• Vestigial Structure - no function

• Vertebrate Embyos

• Homologous Structure - Same structure, different function

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3