8/7/2019 The Quest to Build a Dinosaur
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The Quest to Build a Dinosaur Jack Horner has the ultimate prop;
a real live dinosaur on a leash. It's bigger
than chicken roughly the size of a turkey maybe eventually the
size of an
Emu. He believes can bring back a dinosaur without using its DNA
he planson doing this by tweaking the birds genes and hatching the
dinosaurs from achicken egg creating a chickenosaurus
66 million years go when a meteor 'the size of Montreal island'
smashed intothe earth near Mexicos Yucatn Peninsula it caused all
sorts of naturaldisasters, 75% of all spieces went extinct and it
created a clay layer which isvisible at a different locations
around the world
A baby T. Rex skull was found near that layer of clay therefore
one of the lastdinosaurs to live before the mass extinction
Evolutionary Development 'evo devo'; Most creatures share many
of thesame genes for example the DNA of a person and a chimpanzee
is 99%
identical Despite changes regarding evolution many of our genes
have been aroundfor 500 million years
Tikaalik-375 million year old fish who is believed to be our own
distant cousinbecause it has a neck, elbows, shoulders and
pro-wrists
evolution doesn't always rely on the development of new genes
it'sredeploying old genes in new ways: changing their switches, or
their time of activity
Scientists searching for dinosaur DNA 'the blue print for life.
Dinosaur DNAsample could provide information form appearance and
behavior to theprocess of evolution; theoretically be used to build
a dinosaur
Oldest piece of DNA is 1 million years old Dinosaurs died out 65
million yearsago time doesn't ruin DNA but the climate does, heat
and humidity
They have found DNA in a 58 million year old T. Rex soft tissues
in the legbone 80 million years old Hadrosaur was found in porous
Sandstone which isbelieved to be a preservative
Hair is a great source of DNA since it locks out moisture and
bacteria, all thatthey have to do is dunk it in bleach, open the
hair shaft and take the DNA out
They have mapped out 70% of the Wolly Mammoths genome, all of
theNeanderthals genome (has been extinct for 30 000 years) and
cloned healthymice from dead frozen ones
Larsson has a chicken embryo in a test tube that he keeps with
him. As anembryo morphs it shows its ancestral traits. For more
than 10 hours theembryo sprouts 5 fingers with pointed claw like
tips, a hint of teeth and a tail.Then a genetic switch flips; teeth
and tail disappear and the 5 fingers become3
Pre-existing programs are often the foundation for something new
Chickens are Dinosaurs
