Recombination in Eukaryotes and Prokaryotes

What is homologous recombination?

• A process in which two RNA molecules exchange genetic information.

• A process in which two proteins exchange genetic information.

• A process in which two cells exchange genetic information.

• A process in which two DNA molecules exchange genetic information.

Which organisms undergo homologous recombination?

• Bacteria, archaea, and eukaryotes

• Prokaryotes, viruses, and fungi

• Protozoa, algae, and animals

• Viruses, fungi, and plants

What is the main purpose of homologous recombination?

• To replicate DNA and maintain genetic stability.

• To repair DNA damage and ensure genetic diversity.

• To prevent DNA damage and increase genetic diversity.

• To cause DNA damage and reduce genetic diversity.

Which enzyme is involved in the initiation of homologous recombination?

• RecF

• RecBCD

• RecE

• RecA

What is a Holliday junction?

• A Holliday junction is a type of food dish.

• A Holliday junction is a junction on a road named Holliday.

• A Holliday junction is a type of holiday celebration.

• A Holliday junction is a DNA structure that forms during genetic recombination and DNA repair processes.

Which of the following is NOT a step in homologous recombination?

• Strand invasion

• Formation of Holliday junction

• DNA replication

• DNA repair

What is the role of homologous recombination in meiosis?

• The role of homologous recombination in meiosis is to prevent genetic diversity and ensure proper chromosome segregation.

• Homologous recombination in meiosis is only involved in the repair of DNA damage and has no impact on genetic diversity or chromosome segregation.

• The role of homologous recombination in meiosis is to promote genetic diversity and ensure proper chromosome segregation.

• Homologous recombination in meiosis has no role in promoting genetic diversity or ensuring proper chromosome segregation.

Which of the following can lead to non-homologous end joining instead of homologous recombination?

• DNA double-strand breaks

• Single-strand breaks

• Mismatched base pairs

• DNA replication errors

What is the significance of homologous recombination in evolution?

• Homologous recombination is only important in non-evolutionary processes.

• Homologous recombination decreases genetic diversity in evolution.

• Homologous recombination has no significance in evolution.

• Homologous recombination increases genetic diversity and provides raw material for natural selection in evolution.

Which of the following is an example of a genetic disorder caused by defective homologous recombination?

• Fanconi anemia

• Huntington's disease

• Down syndrome

• Cystic fibrosis