extinction 1 of dinosaurs...dinosaurs modern life angiosperms common ancestor of mammals gymnosperms...
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Estimated age of the first appearance by DNA study
archaea
eubacteria
protists
plants
fungi
animals
201051 30 38
seaw
eeds
(Chi
na)
spon
ges
(Nam
ibia
)
mul
ticel
lula
r alg
ae (U
SA)
mam
mal
s(C
hina
)
inse
cts
(Eng
land
)
land
pla
nts
(Arg
entin
a)
colo
nial
org
anis
ms
(Gab
on)
trac
es o
f euk
aryo
tes
and
alga
e (C
anad
a)
mic
rofo
ssils
(Can
ada)
biog
enic
sub
stan
ce (G
reen
land
)
Tim
e of
the
olde
st fo
ssils
foun
d
hund
red
mill
ion
year
s ag
o20
3038
105
1
1
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beginningof life
beginningof life
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side│History of evolution of life viewed from DNA and fossilsComparing DNA sequences between species tells changes in DNA accumulated
after the two species were divided. These changes estimate the age when
these species arose. This method calculates the age older than when they really
appeared, because it shows the time when they were first divided. Fossils tell
us the shape and the living age of ancient lives. Combination DNA and fossils
estimates the age of old life more accurate.
references : Bioinformatics vol.22 2971-2972(2006)
TIMETREE http://www.timetree.org
back│Genome size and body sizeGenomes contain many genes, however, genome size does not
depend on the number of genes but the size of regions without
genes. The relationships between the organisms and their
genome size remain an open question. The animals which have
the largest genomes are lungfishes, familiar at the BRH, and the
organisms which have largest bodies are surprisingly fungi. The
fungus covering the Oregon Mountain was found an individual
organism by its DNA analysis.
references : http://en.wikipedia.org/wiki/Largest_organismseukaryotes
Biohistory Emaki 1/2birth of human beingsbirth of human beings
Extinctionof
dinosaurs
Modern life
angiosperms
commonancestor of
mammals
gymnospermspteridophytes
bryophyteschordates
sponges (metazoa)
chytrids (primitive fungi)
common ancestor of metazoa and fungi
common ancestor of plantscommon ancestor of protists
eukaryotes prokaryotes
beginning of lifepresent day
begi
nnin
g of
life
pres
ent d
ay
hundred millionyears ago
arch
aea
euba
cter
ia
prot
ists
plan
ts
fung
i
anim
als
Cainozoic
life of the Cambrian
life of the Devonian
life of the Cretaceouslanding
Mesozoic
Cambrianexplosion
Paleozoic
multicellularitymulticellularity
birth ofeukaryotes
Proterozoic
6
7
8
archaea
eubacteria
algae
land plants
fungi
mollusks
insects
teleosts
amphibians
birds
mammals
genome size
body size
genome size and body size
(million base pairs)
(mm)
0.1
0.0001
1
0.01
10
1
100
100
1,000
10,000
10,000
1,000,000
100,000
100,000,000
9
gigantic meteorite
Biohistory Emaki 2/2