Evolution History

What does this diagram show?

• All three species share a common ancestor, but the African elephant and Sumatran tiger are more closely related to each other than they are to the Norway rat.

• All three species share a common ancestor, but the Sumatran tiger and Norway rat are more closely related to each other than they are to the African elephant.

• The Sumatran tiger, African elephant, and Norway rat are not related and come from separate lines of evolutionary history.

• All three species share a common ancestor and are equally related to each other.

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Shared Structures always come from

• random chance

• two different species in a similar environment

• a common ancestor

• species structures are entirely unique.

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What is a related organism from a previous generation?

• an adaptive trait

• an ancestor

• a descendant

• a generation

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Fill in the blanks: Species (blank) their body structures from their (blank) populations.

• evolve, previous

• inherit, descendant

• inherit, ancestor

• evolve, descendant

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What is speciation?

• the process by which one population evolves into two or more different species

• a group of the same type of organism living in the same area

• an older population from which two or more newer species descended

• a more recent species that evolved from an ancestor population

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Why is Environment important to evolution?

• It is where animals choose to live

• It causes mutations

• It decides which traits can survive and make babies

• It makes mutations happen more often

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What is a paleontologist?

• an individual that follows a paleo diet

• a person who lived in the distant past

• a scientist who studies fossils to understand Earth's history

• an organism that was once alive, but is now extinct

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What structure did the common ancestor have?

• Scapula bone in shoulder

• Three bones in inside ear

• Two bones in inside ear

• Five toes in each back limb

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Is the new fossil more closely related to the Hippopotamus or the Green Iguana?

• The Hippopotamus, because they bother have the scapula in the shoulder

• The Hippopotamus, because they both have three bones inside the ear

• The Green Iguana, because they both have the scapula bone in the shoulder

• The Green Iguana, because they both have five toes on the back limb

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NGSS.MS-LS4-1

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Which Traits did the Common Ancestor have? select all that apply

• Tibia Bone

• Lays eggs

• scale

• fur

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