The Question is from neet-botany , and it was created by the author K SURESH KUMAR

Question

What divides first during the method of fission?

K SURESH KUMAR · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
**Primary Concept**: Binary Fission
**Related Topics**: Cell Division, Prokaryotic Cell Structure
**Prerequisites**: Basic understanding of prokaryotic cell structure and binary fission.
## SOLUTION PATHWAY
**Given Information**:
  * Question is asking about the initial division in fission.
**Method & Steps**:
 1. Recall the process of binary fission in prokaryotes.
    Reasoning: Binary fission involves the replication and segregation of genetic material followed by cell division.
    Formula/Rule: None applicable
 2. Identify the structure that contains the genetic material in a prokaryotic cell.
    Working: The nucleus (or nucleoid in prokaryotes) contains the DNA.
    Key Point: In prokaryotes, the genetic material is not enclosed within a membrane-bound nucleus, but the term 'nucleus' is often used for simplicity here.
 3. Determine which structure divides first during fission.
    Result: The genetic material (nucleus) replicates and segregates before other cell components are divided.
    Verification:  The nucleus has to be divided first to ensure each daughter cell will have the necessary genetic material.
 ## OPTION ANALYSIS
[A] :x: The cytoplasmic membrane is involved in the pinching off of the cell, but divides after the nucleus.
[B] :x: The cytoplasm divides after the nucleus has been divided and segregated.
[C] ✓: The nucleus containing the genetic material must replicate and segregate first.
[D] :x: The nucleolus is a structure found within the nucleus of eukaryotic cells and is not a primary focus during fission in prokaryotes.
 ## LEARNING AIDS
**Common Mistakes**:
 1. Confusing the order of division of cellular components.: Understand that replication of genetic material is a priority.
 2. Thinking that eukaryotic cell division is the same as binary fission: Fission is a simpler process.
**Quick Tips**:
 1. Remember that in binary fission, genetic material must be replicated and separated before the cell itself divides.
 2. Focus on the function of each cell component during fission.

K SURESH KUMAR · Answer

cytoplasmic membrane

K SURESH KUMAR · Answer

cytoplasm

K SURESH KUMAR · Answer

The correct Option is "nucleus"

K SURESH KUMAR · Answer

nucleolus

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