B3 Evolution 0.0 / 5 ? BiologyEvolution, extinction and natural selectionGCSEEdexcel Created by: elliekhannaCreated on: 19-06-16 14:44 what is a hominid A common ancestor of a human and ape that have similar characteristics 1 of 16 Who was Ardi She lived 4.4 million years ago and is thought to be a homosapien ancestor 2 of 16 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 3 of 16 Who was Lucy She lived 3.2 million years ago and was the next evolution after Ardi 4 of 16 What features did Lucy have a lightly bigger brain and shorter arms, she had arched feet to help walk upright better, didnt climb 5 of 16 Who discovered homo erectus Leakey 6 of 16 What features did homo erectus have A bigger brain than Lucy, longer legs than arms and the feet ere better adapted to walking upright 7 of 16 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 8 of 16 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 9 of 16 Who is mitochondrial eve A woman from Africa who everyone shares similar mitochondrial DNA with 10 of 16 Why is mitochondrial DNA more useful than nuclear dna in learning about evoltuion It is in higher abundance and does not degrade as quickly 11 of 16 Who do you inherit mitochondrial DNA from Only your mother 12 of 16 What have we learnt from mtDNA that homo sapiens evolved from Africa 13 of 16 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 14 of 16 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 15 of 16 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 16 of 16
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