NS day 4 Br Mutations

Mutations in DNA molecules can occur when -

• replication of DNA is exact

• an enzyme attaches to an RNA codon

• RNA codons are replaced by DNA nucleotides

• a change occurs in DNA nucleotide bases

The change in Statement 1 to form Statement 2 is most similar to what type of mutation?

• Insertion

• Deletion

• Substitution

• Frameshift

A mutation is least likely to affect a cell when the mutation —

• reverses the order of bases in a DNA strand

• allows the total number of bases in a DNA sequence to remain the same

• replaces a base with its complementary base

• produces a triplet that codes for the same amino acid as the original triplet

Which one displays an Insertion

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Which one displays a Deletion

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Which one displays Translocation

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Which one displays Inversion

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Which one displays Duplication

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The transfer of a section of one chromosome to a non-homologous chromosome is known as

• Synapsis

• Deletion

• Translocation

• dis-junction