Q. The First step of Bacterial Replication is
✅ Correct Answer: (D)
DNA Replication
Explanation:
The first step in bacterial replication (specifically in binary fission) is the attachment of the DNA (usually a single circular chromosome) to the plasma membrane. This allows the DNA to start replication at the origin of replication.
After attachment, the following steps occur:
- DNA replication begins at the origin.
- The DNA is replicated to produce two identical copies.
- The cell elongates, and the two DNA copies are separated.
- Finally, the plasma membrane pinches in and separates the daughter cells.
Why other options are incorrect:
- (B) Pinching of the plasma membrane – This occurs later in the process, after DNA replication.
- (C) Separation of daughter cells – This happens after the DNA has been replicated and the cell has divided.
- (D) DNA Replication – This happens after the DNA is attached to the plasma membrane.
Explanation by: Mr. Dubey
The first step in bacterial replication (specifically in binary fission) is the attachment of the DNA (usually a single circular chromosome) to the plasma membrane. This allows the DNA to start replication at the origin of replication.
After attachment, the following steps occur:
- DNA replication begins at the origin.
- The DNA is replicated to produce two identical copies.
- The cell elongates, and the two DNA copies are separated.
- Finally, the plasma membrane pinches in and separates the daughter cells.
Why other options are incorrect:
- (B) Pinching of the plasma membrane – This occurs later in the process, after DNA replication.
- (C) Separation of daughter cells – This happens after the DNA has been replicated and the cell has divided.
- (D) DNA Replication – This happens after the DNA is attached to the plasma membrane.