B3 Evolution

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what is a hominid
A common ancestor of a human and ape that have similar characteristics
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Who was Ardi
She lived 4.4 million years ago and is thought to be a homosapien ancestor
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What features did Ardi have
Her feet were thought to be for climbing as she had a ape like toe, her arms were longer than her legs but thought to have walked upright
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Who was Lucy
She lived 3.2 million years ago and was the next evolution after Ardi
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What features did Lucy have
a lightly bigger brain and shorter arms, she had arched feet to help walk upright better, didnt climb
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Who discovered **** erectus
Leakey
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What features did **** erectus have
A bigger brain than Lucy, longer legs than arms and the feet ere better adapted to walking upright
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How do stone tools show evidence for evolution
The more recent the stone tool the more complex the brain became, they show the brains were getting bigger
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How do you determine the age of the stone tool
Carbon dating, looking at the rock layers (stratigraphy) and seeing what fossils they were buried with
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Who is mitochondrial eve
A woman from Africa who everyone shares similar mitochondrial DNA with
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Why is mitochondrial DNA more useful than nuclear dna in learning about evoltuion
It is in higher abundance and does not degrade as quickly
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Who do you inherit mitochondrial DNA from
Only your mother
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What have we learnt from mtDNA
that **** sapiens evolved from Africa
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Why did migration cause behaviour changes
They had to adapt to their new environment and create tools to help catch food that was their new diet
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What 6 changes in homosapien lifestyle helped them to survive the ice age
They wore fur to keep them warm, hunted more, built shelters, learnt to communicate, built fires and better tools to hunt with
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How is co-evolution beneficial to plants and insects
The plants benefit as the insect is more likely to go back to pollinate the plant and the insect does not have to compete for a food source
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Card 2

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Who was Ardi

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She lived 4.4 million years ago and is thought to be a homosapien ancestor

Card 3

Front

What features did Ardi have

Back

Preview of the front of card 3

Card 4

Front

Who was Lucy

Back

Preview of the front of card 4

Card 5

Front

What features did Lucy have

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