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Q. The First step of Bacterial Replication is

  • (A) Attachment of the DNA to the plasma membrane
  • (B) Pinching of the plasma membrane
  • (C) Separation of daughter cells
  • (D) DNA Replication
  • Correct Answer - Option(D)
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Explanation by: Admin

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:

  1. DNA replication begins at the origin.
  2. The DNA is replicated to produce two identical copies.
  3. The cell elongates, and the two DNA copies are separated.
  4. 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.

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