BIAS IN FOSSIL RECORDS
Geographical Bias trouble with the distribution of fossils in different
places
continent death condition condition
movements , preservation
:
cause
,
effect :
can't estimate the actual distribution , ecosystem
Taxonomic Bias trouble with the
representation for different
types of organisms
cause
:
hardiness of organism, preservation condition likelihood of fozzilization
,
effect and underrepresent of each
species
:
overrepresent
Temporal Bias <trouble with number in each time periods
hard find old fossily
periods have better preservation condition to
dig deep and
:
cause some
,
effect estimate the distribution the numbers of the
can't
organismg
:
,
ORIGIN OF LIFE
Around 4 6 billion :
years a go
.
the
solar system and the planet was formed after big bang
Primitive Somp -a theory by Oparin & Maldane in 1920s >
1 Earth was full of toxic and dust Ex nitrogen ammonia cyanide
gas Cyanogen
.
. .
, , ,
2 . The elements somehow became organic molecules and mixed with dusts & water .
Early Earth simulation > conducted by Miller &
Urey>
1 . Simulate the atmosphere with a mixture of
gases .
<methane
,
armania
,
Ete .
2 .
Add home-made
lighting and UV radiation ,
.
3 Profit .
< found amino acid and neudeic acid >
polymerization <found by an Aussie named Fox>
1 . The neuclectide sticks to En/Fe in mud .
2 . Neucleotides that are close
,
sticks together .
.
3 Profit .
got polymer(
The first life form <candidates DNA RNA and
proteins
very
: are
, ,
keyword :
can
self-replicate/self-template < can make a mold of itself and use its
DNA It sucks be replicated by the
help from proteins and can't self-template
:
can ·
, ,
RNA
:
YES .
Can also changes it's shape to stablize .
Can't do
protein anything complicated
:
and is .
How did RNA wins : resulted in Vivoids >
It's
literally a mold for other neucleotides to fit in . Both strands separates under high temp y
resulting in 1
original strand and I mold .
Geographical Bias trouble with the distribution of fossils in different
places
continent death condition condition
movements , preservation
:
cause
,
effect :
can't estimate the actual distribution , ecosystem
Taxonomic Bias trouble with the
representation for different
types of organisms
cause
:
hardiness of organism, preservation condition likelihood of fozzilization
,
effect and underrepresent of each
species
:
overrepresent
Temporal Bias <trouble with number in each time periods
hard find old fossily
periods have better preservation condition to
dig deep and
:
cause some
,
effect estimate the distribution the numbers of the
can't
organismg
:
,
ORIGIN OF LIFE
Around 4 6 billion :
years a go
.
the
solar system and the planet was formed after big bang
Primitive Somp -a theory by Oparin & Maldane in 1920s >
1 Earth was full of toxic and dust Ex nitrogen ammonia cyanide
gas Cyanogen
.
. .
, , ,
2 . The elements somehow became organic molecules and mixed with dusts & water .
Early Earth simulation > conducted by Miller &
Urey>
1 . Simulate the atmosphere with a mixture of
gases .
<methane
,
armania
,
Ete .
2 .
Add home-made
lighting and UV radiation ,
.
3 Profit .
< found amino acid and neudeic acid >
polymerization <found by an Aussie named Fox>
1 . The neuclectide sticks to En/Fe in mud .
2 . Neucleotides that are close
,
sticks together .
.
3 Profit .
got polymer(
The first life form <candidates DNA RNA and
proteins
very
: are
, ,
keyword :
can
self-replicate/self-template < can make a mold of itself and use its
DNA It sucks be replicated by the
help from proteins and can't self-template
:
can ·
, ,
RNA
:
YES .
Can also changes it's shape to stablize .
Can't do
protein anything complicated
:
and is .
How did RNA wins : resulted in Vivoids >
It's
literally a mold for other neucleotides to fit in . Both strands separates under high temp y
resulting in 1
original strand and I mold .
