DNA Replication Process in Eukaryotes and Prokaryotes
DNA Replication in Eukaryotes and Prokaryotes
DNA replication in eukaryotes and prokaryotes starts when a complex of proteins binds to an origin of replication (Figure 1A) and separates the two strands of the double helix to form a replication bubble with replication forks at each end (Figure 1B). In order for replication to proceed, the enzyme topoisomerase binds to the DNA immediately in front of the advancing replication forks.
Explain why DNA replication cannot proceed to the regions of the chromosome labeled as I in Figure 1B unless topoisomerase binds ahead of each advancing replication fork in region II.
A replication bubble is created when the circular bacteria chromosome's double-stranded DNA is opened at the point of replication. The bubble has replication forks, which are Y-shaped, at each end.
Where can you find chromosomes?
The thread-like components known as chromosomes are found in the nucleus of both organisms. Describe a chromosome. The thread-like components known as chromosomes are found in the nucleus of both cells in plants and animals. Protein and a single unit of deoxyribonucleic acid make up each chromosome (DNA).
Chromosomes: Do plants have them?
We are attempting to explain the evidence supporting the claim that plants have chromosomes in this article, as well as the chromatids present in various plant species. Both plant and animal cells include chromosomes, which are coiled structures that resemble threads.
DNA Replication Questions:Use the template of a replication fork to draw arrows that represent both continuous and discontinuous DNA synthesis. Draw one long arrow to show continuous DNA synthesis and three arrows to show discontinuous DNA synthesis. The arrows should point in the direction of nucleotide addition, and the three arrows showing discontinuous synthesis should be numbered 1, 2, and 3, in the order of fragment synthesis.
Referring to Figure 1B, explain why any newly synthesized strand of DNA is the result of both continuous and discontinuous DNA synthesis.