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Creature or Catastrophe? | National Geographic


there are some 14,000 genes that go on

there are some 14,000 genes that go on to build a fly but the process starts

to build a fly but the process starts

to build a fly but the process starts with the tool kit these toolkit genes

with the tool kit these toolkit genes

with the tool kit these toolkit genes tell other genes where to put the head

tell other genes where to put the head

tell other genes where to put the head the tail all the limbs and aunt any a

the tail all the limbs and aunt any a

the tail all the limbs and aunt any a problem in one of these genes during

problem in one of these genes during

problem in one of these genes during development can transform a creature

development can transform a creature

development can transform a creature into a catastrophe and it gets even

into a catastrophe and it gets even

into a catastrophe and it gets even stranger toolkit genes don’t just exist

stranger toolkit genes don’t just exist

stranger toolkit genes don’t just exist in flies there in a huge variety of

in flies there in a huge variety of

in flies there in a huge variety of animals including humans that’s why

animals including humans that’s why

animals including humans that’s why there is such similarity in the embryos

there is such similarity in the embryos

there is such similarity in the embryos of a fly a mouse an elephant and a human

of a fly a mouse an elephant and a human

of a fly a mouse an elephant and a human despite how different they look as

despite how different they look as

despite how different they look as adults a similar kind of recipe

adults a similar kind of recipe

adults a similar kind of recipe underlies the development of bodies as

underlies the development of bodies as

underlies the development of bodies as different as those of sea anemones and

different as those of sea anemones and

different as those of sea anemones and humans I mean that’s really remarkable

humans I mean that’s really remarkable

humans I mean that’s really remarkable that a version of the same recipe can

that a version of the same recipe can

that a version of the same recipe can build bodies that are so utterly

build bodies that are so utterly

build bodies that are so utterly different the finished product may vary

different the finished product may vary

different the finished product may vary finn’s feathers or fingers but like

finn’s feathers or fingers but like

finn’s feathers or fingers but like distinctive cars underneath the paint

distinctive cars underneath the paint

distinctive cars underneath the paint job the genetic chassis is the same it’s

job the genetic chassis is the same it’s

job the genetic chassis is the same it’s a new way to look at nature’s body

a new way to look at nature’s body

a new way to look at nature’s body building as if there’s a tool shop

building as if there’s a tool shop

building as if there’s a tool shop inside each of us using a similar set of

inside each of us using a similar set of

inside each of us using a similar set of genes to make parts and appendages in

genes to make parts and appendages in

genes to make parts and appendages in very different organisms creatures and

very different organisms creatures and

very different organisms creatures and their body parts aren’t invented from

their body parts aren’t invented from

their body parts aren’t invented from scratch they evolved when their genetic

scratch they evolved when their genetic

scratch they evolved when their genetic networks are modified by ancient toolkit

networks are modified by ancient toolkit

networks are modified by ancient toolkit genes evolution of form is a matter of

genes evolution of form is a matter of

genes evolution of form is a matter of teaching very old jeans new tricks if

teaching very old jeans new tricks if

teaching very old jeans new tricks if you take a look at the difference

you take a look at the difference

you take a look at the difference between a mouse and a cat the difference

between a mouse and a cat the difference

between a mouse and a cat the difference is not new types of cells but change an

is not new types of cells but change an

is not new types of cells but change an organization somewhere along the line

organization somewhere along the line

organization somewhere along the line those instructions were modified not in

those instructions were modified not in

those instructions were modified not in a way that scrambled them but in a way

a way that scrambled them but in a way

a way that scrambled them but in a way that gave subtle changes to lead to the

that gave subtle changes to lead to the

that gave subtle changes to lead to the differences between organisms of course

differences between organisms of course

differences between organisms of course not every organism can stack up against

not every organism can stack up against

not every organism can stack up against the environment the genetic toolkit

the environment the genetic toolkit

the environment the genetic toolkit builds bodies that are at best hopeful

builds bodies that are at best hopeful

builds bodies that are at best hopeful possibilities fossil beds are littered

possibilities fossil beds are littered

possibilities fossil beds are littered with one hit wonders evolutionary

with one hit wonders evolutionary

with one hit wonders evolutionary experiments that proved to be

experiments that proved to be

experiments that proved to be maladaptive dead ends evolution has

maladaptive dead ends evolution has

maladaptive dead ends evolution has taken millions of twists and turns how

taken millions of twists and turns how

taken millions of twists and turns how did toolkit genes that made an ancient

did toolkit genes that made an ancient

did toolkit genes that made an ancient worm get reconfigured to eventually make

worm get reconfigured to eventually make

worm get reconfigured to eventually make the parts that make us our hands our

the parts that make us our hands our

the parts that make us our hands our hearts our upright naked bodies and

hearts our upright naked bodies and

hearts our upright naked bodies and ultimately the brilliant brain in our

ultimately the brilliant brain in our

ultimately the brilliant brain in our heads

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