Higher human biology Unit 1.4

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1. What happens in a nonsense mutation?

  • A codon for an amino acid is swapped for a stop codon.
  • A codon for an amino acid is swapped for a different amino acid codon
  • A codon for an amino acid is swapped for a different protein
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2. what happens in a translocation mutation?

  • A section of genes from a non-homologous chromosome is added or inserted into the chromosome
  • A change in the size of genes in a chromosome.
  • A section of genes is deleted from the chromosome resulting in a shorter chromosome
  • A section from the homologous partner chromosome is added to the chromosome.

3. What effect do frameshift mutations have on the protein coded for?

  • Every amino acid after the mutation is altered which results in a protein that doesn’t work
  • A change in the number or sequence of genes in a chromosome.
  • A shorter protein

4. What happens in a deletion chromosome mutation?

  • a section of the chromosome is reversed.
  • A section of genes is deleted from the chromosome resulting in a shorter chromosome
  • A section of nucleotides are deleted from a gene.
  • A section of genes from a non-homologous chromosome is added or inserted into the chromosome

5. What are 4 types of chromosome mutation?

  • Deletion, duplication, inversion and transcription
  • Deletion, duplication, inversion and translocation
  • Deletion, duplication, substitution and translocation
  • substitution, duplication, inversion and translocation

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