Chromosomal morphology (Structure) is best observed at :-

Options

A. Prophase
B. Metaphase
C. Interphase
D. Anaphase

Answer

To determine when chromosomal morphology (structure) is best observed, we need to analyze the different phases of cell division. Here’s a step-by-step solution:

### Step 1: Understand the Phases of Cell Division
The cell cycle consists of several phases, including interphase, prophase, metaphase, anaphase, and telophase. Each phase has distinct characteristics regarding chromosomal structure.

### Step 2: Analyze Prophase
In prophase, chromosomes begin to condense and become visible, but they are not fully distinct. They may overlap and are not clearly defined, making it difficult to observe their morphology accurately.

**Hint:** Prophase is when chromosomes start to condense but are not yet fully visible.

### Step 3: Analyze Metaphase
During metaphase, chromosomes are fully condensed and aligned at the metaphase plate. This is the stage where chromosomes are most distinct, allowing for the best observation of their morphology, including shape, size, and number.

**Hint:** Metaphase is the stage where chromosomes are most clearly visible and aligned.

### Step 4: Analyze Interphase
In interphase, the chromatin is in a relaxed state and not condensed into distinct chromosomes. Therefore, chromosomal morphology cannot be observed during this phase.

**Hint:** Interphase is when chromatin is not condensed, making chromosomes invisible.

### Step 5: Analyze Anaphase
In anaphase, sister chromatids are pulled apart towards opposite poles of the cell. While the chromatids are visible, they are in motion and not in a stable position, making it challenging to observe their morphology clearly.

**Hint:** Anaphase involves movement of chromatids, which makes observation difficult.

### Conclusion
Based on the analysis of each phase, the best phase to observe chromosomal morphology is **metaphase**.

### Final Answer
**Metaphase** is the phase where chromosomal morphology is best observed.

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