IB Biology Topic A1.2.9: Diversity of Possible DNA Base Sequences and Its Capacity for Storing Information Notes

A Few Bases Can Store Almost Limitless Information

DNA's power lies in the flexibility of its base sequences.

Any base can follow any other, and DNA molecules range from a few dozen base pairs to billions.

It is the sequence of bases, not the backbone, that stores information, so even a single change can have a big effect.

Example

A DNA molecule just 10 base pairs long has $4^{10} = 1{,}048{,}576$ possible sequences.
A molecule 1,000 base pairs long has $4^{1000}$ possible sequences.
This staggering diversity is why DNA can store the huge amount of information needed to build and run an organism.
It also explains why every organism is unique.

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IB Biology Topic A1.2.9: Diversity of Possible DNA Base Sequences and Its Capacity for Storing Information Notes

A Few Bases Can Store Almost Limitless Information

DNA vs. Binary Code: Efficient Storage

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A Few Bases Can Store Almost Limitless Information

DNA vs. Binary Code: Efficient Storage

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A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic A1.2.9: Diversity of Possible DNA Base Sequences and Its Capacity for Storing Information Notes

A Few Bases Can Store Almost Limitless Information

DNA vs. Binary Code: Efficient Storage

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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A Few Bases Can Store Almost Limitless Information

DNA vs. Binary Code: Efficient Storage

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics