Table of contents

1. Introduction to Genetics51m
2. Mendel's Laws of Inheritance3h 37m
3. Extensions to Mendelian Inheritance2h 41m
4. Genetic Mapping and Linkage2h 28m
5. Genetics of Bacteria and Viruses1h 21m
6. Chromosomal Variation1h 48m
7. DNA and Chromosome Structure56m
8. DNA Replication1h 10m
9. Mitosis and Meiosis1h 34m
10. Transcription1h 0m
11. Translation58m
12. Gene Regulation in Prokaryotes1h 19m
13. Gene Regulation in Eukaryotes44m
14. Genetic Control of Development44m
15. Genomes and Genomics1h 50m
16. Transposable Elements47m
17. Mutation, Repair, and Recombination1h 6m
18. Molecular Genetic Tools19m
- Genetic Cloning
  9m
- Methods for Analyzing DNA
  9m
19. Cancer Genetics29m
- Overview of Cancer
  21m
- Cancer Mutations
  7m
20. Quantitative Genetics1h 26m
21. Population Genetics50m
- Hardy Weinberg
  19m
- Allelic Frequency Changes
  31m
22. Evolutionary Genetics29m

8. DNA Replication

Overview of DNA Replication

Genetics

8. DNA Replication

Overview of DNA Replication

Previous problemNext problem

Struggling with Genetics?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Multiple origins of replication on the DNA molecules of eukaryotic cells serve to:

allow DNA replication to occur more rapidly by enabling simultaneous replication at several sites

ensure that only one strand of DNA is replicated at a time

prevent the formation of Okazaki fragments during replication

increase the accuracy of DNA replication by providing backup origins

Previous problemNext problem

Verified step by step guidance

Understand the role of origins of replication in DNA replication. Origins of replication are specific sequences where DNA replication begins.

Recall that eukaryotic chromosomes are large and linear, so having multiple origins allows replication to start at several points simultaneously.

Recognize that simultaneous replication at multiple sites speeds up the overall process of copying the entire DNA molecule.

Consider why the other options are incorrect: replication of only one strand at a time is not related to origins; Okazaki fragments form on the lagging strand regardless of origin number; and accuracy is primarily maintained by DNA polymerase proofreading, not by multiple origins.

Conclude that multiple origins of replication serve to increase the speed of DNA replication by enabling simultaneous replication at several sites along the DNA molecule.