similar G+C content = similar base seq?

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klapausius
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similar G+C content = similar base seq?

Post by klapausius » Tue Oct 12, 2010 11:50 am

Do organisms with similar mole percent (G+C) have similar base sequence?

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jonmoulton
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Re: similar G+C content = similar base seq?

Post by jonmoulton » Tue Oct 12, 2010 3:41 pm

Likely not. For instance, CGCACGCACT has the same G+C content as CCCCCGGAAT, but the sequences are very dissimilar. Extremely high very low C+G percentage constrains the range of possible sequence somewhat, but organisms have plenty of all four bases and therefore can have great variation in sequence.

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