Human Origin
Human Orgin
Development
Fossils/ Cambrian Explosion
First life
100
We can use ________ to tell us about our distant ancestors
DNA
100
Why did it take the modern day humans almost 10 000 years to get from the middle east to Europe?
Humans passed through central Asia before colonizing in Europe
100
How many genes do humans have?
23 000
100
_____ years ago the first fossil evidence of life resembled modern day stromatolites.
3.5 billion years ago
100
The "Glue" that holds multicellular animals together is
Collagen
200
The modern day _________ carry some of the oldest Y chromosome markers
San Bushman
200
What piece of DNA is used to trace male ancestry?
Y Chromosome
200
The difference in finches on the Galapagos islands are the result of?
Different food sources available on different islands.
200
______ years ago the first fossil evidence of multi-cellular eukaryotes
1.2 billion years ago
200
The presence of drop stones around the world suggest that? (Different coloured rocks on top of darker rocks found on the east coast of Canada)
glaciers covered much of the earth
300
The first modern humans to leave Africa arrived in _______ about ___________ years ago
Australia, 45000
300
What piece of DNA can women use to trace back to a single women that lived in Africa around 200,000 years ago?
Mitochondrial
300
The first 4 legged animals evolved about _____ years ago?
365 million years ago
300
The split of humans and chimpanzees occurred about ___- ___ million years ago. Modern day humans diverged about ________ years ago.
6-7, 200 000
300
What evidence is there that Charnia wasn't a pant?
Lived in waters too deep to carry out photosynthesis
400
In what country is there evidence of coastal migration from Africa to Australia?
India
400
What is the percentage of identical DNA sequence shared by humans and chimpanzee's?
98.8%
400
Darwin wondered what makes animals change, the idea of selection came from his knowledge of ________.
Dog breeders.
400
The last time when insects and humans shared a common ancestor was _____ million years ago and know as ________.
600, urbilatera.
400
Prokaryotes that lived in harsh environments are called __________.
Extremophiles
500
Why must modern day humans be considered a modern import into Australia?
Humans are the only primate species living in Australia
500
Chimpanzee's and Humans diverged about _______ years ago. Neanderthal's and humans diverged about ______ years ago. Anatomically modern humans evolved in Africa around ________ years ago and Humans migrated into Eurasia within the last _______ - _______ years.
6 million, 400 000, 200 000, 40 000- 80 000.
500
The oder of Hox genes expressed in the fish fin are the same as those expressed in the arm and hand of terrestrial vertebrates. Which fish was used to demonstrate this?
The paddlefish
500
Are both protostomes and deuterostomes bilaterally symmetrical? Bilatera have a _______ (anterior) and a _____ (posterior).
Yes Head, tail
500
Stromatolites are composed of?
Photosynthetic bacteria
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