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Special topic: Metagenomics - Genome Sciences

Special topic: Metagenomics - Genome Sciences

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Reads<br />

<strong>Genome</strong> coverage (%)<br />

100<br />

90<br />

80<br />

70<br />

60<br />

50<br />

10000000<br />

40<br />

9000000<br />

30<br />

20<br />

8000000<br />

10<br />

7000000<br />

6000000<br />

5000000<br />

4000000<br />

0<br />

3000000<br />

2000000<br />

1000000<br />

0<br />

1<br />

1<br />

6<br />

7<br />

<strong>Genome</strong>-centric vs. Gene-centric views<br />

11<br />

13<br />

16<br />

19<br />

21<br />

26<br />

25<br />

31<br />

31<br />

36<br />

37<br />

41<br />

43<br />

46<br />

49<br />

51<br />

55<br />

56<br />

61<br />

Species abundance (%)<br />

61<br />

66<br />

Species abundance (%)<br />

67<br />

71<br />

73<br />

76<br />

1x coverage<br />

5x coverage<br />

10x coverage<br />

79<br />

81<br />

85<br />

86<br />

91<br />

91<br />

96<br />

97<br />

For a species 10% abundant, 10x<br />

library coverage:<br />

‣ 1 million sequencing reads<br />

‣ Cover 63% of the genome<br />

Ouch.

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