AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is the site of DNA replication in eukaryotes?
A
vacuole
B
nucleus
C
ribosome
D
cytoplasm
Explanation: 

Detailed explanation-1: -The eukaryotic DNA replication takes place in the cell nucleus and only occurs in the S phase at many chromosomal origins. Similar to prokaryotic DNA replication, eukaryotic cells also use the semi-conservative process of replication but there are multiple origins of replication.

Detailed explanation-2: -In eukaryotes, as DNA is present inside the nucleus, DNA replication takes place inside the nucleus. Whereas in Prokaryotes, no well-developed nucleus is found. Also, no nuclear separation is seen due to the lack of a nuclear membrane. Hence, in prokaryotes, cytoplasm occurs.

Detailed explanation-3: -The site of ongoing DNA synthesis during DNA replication is called replication fork. It comprises the two parental DNA strands that are separated in order to allow copying of each single strand by the DNA polymerases.

Detailed explanation-4: -DNA replication in eukaryotes occurs in three stages: initiation, elongation, and termination, which are aided by several enzymes.

There is 1 question to complete.