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6 Cards in this Set
- Front
- Back
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What are mutations? |
Changes to the base sequence of DNA. |
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The two types of mutation that can occur include? |
• Substitution - one base is substituted for another.
• Deletion - one base is deleted. |
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If a mutation occurs in a gene, what could be altered? |
The sequence of amino acids it codes for and the protein formed. |
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The degenerate nature of the genetic code means what? |
That not all substitution mutations affect the order of the amino acid as more than one DNA triplet may code for the same amino acid. |
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Why will deletion mutations always cause changes in the amino acid sequence? |
It will change the number of bases present which will cause a shift in all the base triplets after it. |
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Give examples of mutagenic agents? |
• Ultraviolet radiation.
• Ionising radiation.
• Chemicals.
• Viruses. |
