Genetic Mutations and DNA Repair

What are the different types of genetic mutations?

• gene mutations, chromosomal rearrangements, translocations, inversions

• point mutations, frameshift mutations, chromosomal mutations, repeat expansions

• substitution mutations, insertion mutations, deletion mutations, inversion mutations

• silent mutations, missense mutations, nonsense mutations, frameshift mutations

What are some causes of genetic mutations?

• Exposure to chemicals or radiation, errors during DNA replication, inheritance of mutated genes

• Exposure to viruses, exposure to sunlight, exposure to loud noises

• Eating genetically modified foods, using cell phones, wearing tight clothing

• Lack of exercise, excessive sugar consumption, stress

What are the mechanisms of DNA repair?

• transcription repair, replication repair, recombination repair

• protein repair, enzyme repair, cell repair

• direct repair, base excision repair, nucleotide excision repair, mismatch repair, and homologous recombination

• mutation repair, gene repair, chromosome repair

What are the different types of DNA repair?

• base excision repair, nucleotide excision repair, mismatch repair, and double-strand break repair

• photoreactivation repair, base-flipping repair, strand displacement repair

• transcription-coupled repair, post-replication repair, recombination repair

• direct repair, homologous recombination, non-homologous end joining

Which type of genetic mutation involves a change in a single nucleotide base?

• frame shift mutation

• point mutation

• chromosomal mutation

• insertion mutation

True or False: Environmental factors can cause genetic mutations.

• True

• Genetic mutations are not caused by environmental factors

• Only in rare cases

• False

What are some examples of genetic mutations that can lead to genetic disorders?

• point mutations, insertions, deletions, duplications, and chromosomal rearrangements

• substitutions, inversions, translocations

• frameshift mutations, nonsense mutations, missense mutations

• gene amplifications, gene fusions, gene translocations

How does DNA repair help maintain the integrity of the genome?

• DNA repair fixes damage and errors in the DNA sequence to maintain genome integrity.

• DNA repair increases the rate of DNA replication in the genome.

• DNA repair removes unnecessary DNA sequences from the genome.

• DNA repair prevents mutations in the genome.

Which type of DNA repair mechanism involves the removal and replacement of damaged DNA?

• base excision repair

• nucleotide excision repair

• mismatch repair

• homologous recombination

What is the role of DNA polymerase in DNA repair?

• DNA polymerase has no role in DNA repair.

• DNA polymerase identifies and corrects errors during DNA replication.

• DNA polymerase triggers the cell's response to DNA damage.

• DNA polymerase repairs damaged DNA by replacing the damaged nucleotide.