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Simple
Example
The
table below(1) illustrates how the amino acid test provides
evidence for paleoDNA preservation.
The
table shows 26 individuals (human and animal), their radiocarbon ages, the
results of the amino acid test, and the success in obtaining paleoDNA.
Without
going into details (available in the technical explanation), you can see from the table that
a favorable amino acid
test result proved a good indicator of paleoDNA preservation.
The
MicroAnalytica amino acid testing service provides you with this information.
For
a more technical explanation of the results, click here.
|
Sample |
Age (years ago) |
Amino
Acid Test indicates paleoDNA preservation. |
DNA
recovered? |
Reference |
|
Horse (California) |
50 |
YES |
YES |
|
|
Extinct
giant ground sloth (Chile) |
13,000 |
YES |
YES |
(5) |
|
Woolly
mammoth (Yuribei, Siberia) |
9,700 |
YES |
YES |
(8) |
|
Horse (Siberia) |
42,000 |
YES |
YES |
|
|
Woolly
mammoth (Khatanga, Siberia) |
50,000 |
YES |
YES |
(8) |
|
Woolly
mammoth (Shandrin, Siberia) |
35-40,000 |
YES |
YES |
(8) |
|
Asiatic
wild ass (Alaska) |
27,000 |
YES |
YES |
(18) |
|
Extinct
giant sloth (Chile) |
13,000 |
YES |
YES |
(5) |
|
Bird (New Zealand) |
3,000 |
YES |
YES |
(19) |
|
Extinct
Wild Ox (Europe) |
6,500 |
NO |
NO |
|
|
Horse (Germany) |
5,500 |
NO |
NO |
|
|
Ground
Sloth (New Mexico) |
13,000 |
NO |
NO |
|
|
Baboon (Egypt) |
2,300 |
NO |
NO |
|
|
Horse (Chile) |
20,000 |
NO |
NO |
|
|
Human
(Egypt) |
4,500 |
NO |
NO |
|
|
Giant
ground sloth (Florida) |
13,000 |
NO |
NO |
|
|
Human
(Egypt) |
4,500 |
NO |
NO |
|
|
Human
(Egypt) |
4,500 |
NO |
NO |
|
|
Human
(Egypt) |
4,500 |
NO |
NO |
|
|
Human (Egypt) |
4,500 |
NO |
NO |
|
|
Giant
ground sloth (Florida) (tooth) |
13,000 |
NO |
NO |
|
|
Ground
sloth (Cuba) |
15,000 |
NO |
NO |
|
|
Ground
sloth (Puerto Rico) |
15,000 |
NO |
NO |
|
|
Scelidon
chiliense (Peru) |
15,000 |
NO |
NO |
|
|
Giant
ground sloth (Peru) |
13,000 |
NO |
NO |
|
|
Ground
sloth (La Brea, California) |
15,000 |
NO |
NO |
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(1)
Poinar, Hendrik N., Hoss,
Matthias, Bada, Jeffrey L., Paabo, Svante Amino Acid Racemization and
the Preservation of Ancient DNA Science 1996 272: 864-866
References for
table:
(5) M. Höss, A. Dilling, A.
Currant, S. Pääbo, Proc. Natl. Acad. Sci. U.S.A. 93, 181 (1996)
(8) T. Lindahl, Nature
365, 700
(1993); M. Höss, M.K. Vereshchagin, S. Pääbo, ibid. 370, 333
(1994).
(18) M. Höss and S. Pääbo,
Nuceic Acids Res. 21, 3913 (1993).
(19) A. Cooper and P. Hood,
in Avian Molecular Evolution and Systematics, D. Mindell, Ed. (Academic Press,
New York, in press).
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