Can Dinosaurs Come Back To Life Like Jurassic World?

Can Dinosaurs Come Back To Life Like Jurassic World?


Hello friends, Welcome to our channel nutshell
school Today, we are going to talk about that Can
Dinosaurs Come Back To Life Like Jurassic World? Dinosaurs dominated Earth for over 140 million
years before having their reign ended by a colossal asteroid impact. Is it possible to bring these long gone reptiles back from the dead and, if we could, would
we really want to? Is Jurassic Park possible? The classic concept for dinosaur resurrection
starts with a DNA-filled mosquito that has been preserved in amber for millions of years.
But is this a scientific possibility or strictly resigned to fiction? Amber is tree resin that has fossilised due
to high pressure and temperature, conditions experienced when spending thousands of years
covered by layers of sediment. Over time the resin hardens to form a gemstone that has
been coveted by humans for thousands of years. The dinosaur DNA that could be preserved inside
amber-entombed blood-sucking insects is of interest as DNA contains the genetic information
for the growth and function of all living things. Could ancient DNA recovered from amber
could serve as a genetic blueprint for recreating the extinct animals? This Lebanese amber specimen dates back to
the Early Cretaceous Period. It is around 120 million years old. This means that Jurassic Park is probably not possible exactly. But the search for dinosaur
DNA doesn’t end there. Blood residue has been found inside ancient insects – they just weren’t
found in amber. ‘A couple of years ago a paper came out about a
mosquito from the Eocene – that’s around 45 million years ago, so around 20 million
years after the dinosaurs died out. The mosquito was preserved in lake sediments and had a
red pigment in its abdomen. When they tested that pigment chemically they discovered haemoglobin-derived
porphyrins.’ These are the breakdown products of haemoglobin,
which is the red protein that carries oxygen around the body in the blood of almost all
vertebrates. Blood but no DNA
When under specific circumstances blood does preserve, it doesn’t mean that scientists
will find DNA in it. So even if a dinosaur’s blood was found inside an ancient insect,
an opportunity to recreate the reptile from it isn’t guaranteed. ‘Even if you find blood or soft tissue, you
don’t necessarily find DNA.’ Ancient DNA has so far been recovered from
permafrost, as well as from subfossils – bones or body parts that have not yet fossilised. But DNA is vulnerable and breaks down rapidly.
Sunlight has negative effects and water can also accelerate deterioration. Modern contamination
is also a problem. DNA has to be handled under strictly controlled conditions.
Currently the oldest DNA to have been found is around one million years old, although
it is possibly younger. DNA 66 times older would have to be found to get to the age of
dinosaurs. Could we clone a dinosaur? DNA breaks down over time. The dinosaurs went
extinct around 66 million years ago and with so much time having passed it is very unlikely
that any dinosaur DNA would remain today. While dinosaur bones can survive for millions of
years, dinosaur DNA almost certainly does not. But some scientists continue to search for
it – just in case. So it looks like cloning a dinosaur is off
the table, but an alternate way to recreate the extinct animals would be to reverse-engineer
one. This involves starting with a living animal and working backwards towards ancient
reptiles, attempting to reverse at least 66 million years of evolution. ‘What is it going to eat when grass hadn’t
evolved back then? What is its function, where do we put it, does anyone own it?’
An attempt to resurrect dinosaurs presents many caveats scientifically and ethically
– making things to put in zoos or amusement parks like Jurassic World likely isn’t the
answer. So for now dinosaurs are probably going to
remain safely in the past. But using genetic engineering to bring back extinct animals
might be considered reasonable in some circumstances. Thanks for watching our video
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Randy Schultz

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