Mutations
A mutation involves a change in the order of the bases (A,T,C,G) in DNA. A mutation can happen
while the mRNA is being made, or at any other time in the cell's life.
Type of gene mutations:
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Addition: an additional base is ______________________
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Deletion: one of the bases is _______________________
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Substitution: one of the bases is ______________ with another.
Consider the following sentence: Thedogatethecatandthemanwasmad
Treat the sentence like mRNA - when broken down into “codons” you have:
What if the following mutations occurred?
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Addition (Add a h after the first a)
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Deletion (Remove the first e)
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The dog hat eth eca tan dth ema nwa sma d
Thd oga tet hec ata ndt hem anw asm ad
Substitution: What if we change a letter?
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The dog ate the cat and the tan was mad
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The dog ate the hat and the man was mad
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The log ate the cat and the man was mad
Effects of mutations:
Positive Mutation: Mutations that have a _____________________________ on the human.
Negative Mutation: Mutations that have a _____________________________ on the human.
Neutral Mutation: a mutation that has _______________________________________
effect.