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

Question

Which of the following occurs more than one and less than five in a chromosome?

K SURESH KUMAR · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
	**Primary Concept**: Chromosome Structure
	**Related Topics**: Cell Biology, Genetics
	**Prerequisites**: Basic knowledge of chromosome components.
## SOLUTION PATHWAY
**Given Information**:
	* Question asks for a component present more than once and less than five times in a chromosome.
**Method & Steps**:
	1. **Recall the structure of a chromosome:** A chromosome generally has two chromatids, one centromere, many chromomeres and two telomeres per chromatid (4 total for the chromosome).
	2. **Analyze each option:**
		* **Chromatid:** Typically 2 per chromosome (after replication).
		* **Chromomere:** Many per chromosome.
		* **Centromere:** Typically 1 per chromosome (after replication).
		* **Telomere:** Typically 2 per chromatid, 4 per replicated chromosome.
	3. **Identify the correct answer:** Telomeres are present more than one and less than five times per chromosome.
## OPTION ANALYSIS
[A] :x: Chromatids are usually two in number after replication, which doesn't fit the criteria.
[B] :x: Chromomeres are numerous along the length of the chromosome and don't fit the criteria.
[C] :x: Centromeres are typically one per chromosome after replication, doesn't fit the criteria.
[D] ✓: Telomeres are present at the ends of each chromatid, meaning there are typically 4 telomeres in a replicated chromosome, fitting the criteria (more than one and less than five).
## LEARNING AIDS
	**Common Mistakes**:
		1. **Confusing chromatid and chromosome**:  Remember that a chromosome can have one or two chromatids depending on whether it has been replicated or not.
		2. **Not remembering the precise number of telomeres**: Focus on the fact that each end of a chromatid is capped by a telomere.
	**Quick Tips**:
		1. Visualize a chromosome: Draw a replicated chromosome and label each part.
		2. Use the root of the words: 'Telomere' relates to 'end', reminding you it's at the ends.

K SURESH KUMAR · Answer

Chromatid

K SURESH KUMAR · Answer

Chromomere

K SURESH KUMAR · Answer

Centromere

K SURESH KUMAR · Answer

The correct Option is "Telomere"

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