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TRANSCRIPT
Copyright © 2011 InteractiveScienceLessons.com
Copyright © 2011 InteractiveScienceLessons.com
Copyright © 2011 InteractiveScienceLessons.com
Cut here,front side only
4cm
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Cut here,front side only
4cm
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This is a single chromosome. Every cell in your body contains 46 of them.
23 came from your mom, and 23 are from your dad.
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Cut here
10cm
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When chromosomes from your mom and dad join, the pair resembles an “X”.
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Upon closer examination, chromosomes are made of a fine thread-like substance called DNA. It’s wound very tightly.
When chromosomes from your mom and dad join, the pair resembles an “X”.
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18cm
First, draw a meandering line to the next cut
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18cm
Next, draw lines opposite the first
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Include “rungs”
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DNA resembles a twisted ladder.
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The “rungs” of DNA are made of bases.
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A
TT
T
GC
CG
CG
GC
A
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The “rungs” of DNA are made of bases.
There are 4 bases: A, T, G, C. A’s only go with T’s, and G’s only with the C’s.
Copyright © 2011 InteractiveScienceLessons.comA
A
TT
T
GC
CG
CG
GC
A
Copyright © 2011 InteractiveScienceLessons.com
The “rungs” of DNA are made of bases.
There are 4 bases: A, T, G, C. A’s only go with T’s, and G’s only with the C’s.
A gene is a section of base pairs.
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•So what is it about that makes you you?DNA