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DNA Crossword

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Across
3
The combination of a single base.
5
Ribonucleic acid, instead of thymine contains sugar.
8
This pair discovered and built a model of the structure of DNA from a stolen photograph.
9
When a part of the genetic code is removed.
10
This women photographed the shape of DNA. It was later stolen and given to Watson and Crick. (hint last name only)
Down
1
When part of the genetic code is replaced.
2
Segment of DNA that codes a particular protein.
4
The building block of life. Its shape is a double helix.
6
This man discovered the chemicals such as Adenine and Cytosine in the nucleus of a cell.
7
When an additional part to the DNA is added.