← Bio wB Ch. 14 Test
5 Written Questions
5 Matching Questions
- Missense Mutation
- Silent Mutation
- Transcription Factor
- a A codon is changed such that the new codon codes for a different amino acid.
- b An abnormal condition of having more than two sets of chromosomes.
- c A nucleotide sequence that is part of a gene and that is transcribed from DNA into mRNA but not translated into amino acids.
- d An enzyme that is needed to begin and/or continue genetic transcription.
- e The mutation has no effect on a gene's function.
5 Multiple Choice Questions
- An insertion or deletion causes the reading frame to be moved and the remaining sequence can be "read" as different codons.
- An individual whose DNA or chromosomes differ from some previous or normal state.
- A change of a single nucleotide in a sequence from one kind of base to another.
- A factor that can increase the rate of mutation.
- A piece of DNA remains attached to its homologous chromosome after meiosis and the chromosome carries both alleles for a gene.
5 True/False Questions
Nonsense Mutation → A codon is changed to a "stop" signal.
Exon → A unit of adjacent genes that consists of functionally related structural genes and their associated regulatory genes.
Chromosome Translocation → A piece of DNA remains attached to its homologous chromosome after meiosis and the chromosome carries both alleles for a gene.
Nondisjunction → A failure of homologous chromosomes to separate during meiosis I or the failure of sister chromatids to separate during mitosis or meiosis II.
Chromosome Deletion → A piece of DNA of a chromosome is lost.