7th Grade

DNA and Mutations

Where do mutations occur?

1. cell cycle where DNA is copied

2. During transcription and translation

Types of Mutations

1. Point Mutations

substitution-  is when one “letter” is substituted for another

inversion- switching of “letters”

2. Frame Shift

Deletion- deletion of parts of the code

Insertion- insertion of the code

“***this is the most damaging type of mutations=Frame Shift

Codes are always in groups of 3  which is called a codon. An example  of this CUU or any 3 letter combination.

 

additional notes need to be drawn come to class for examples.

 

 

 

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