## Core Concept
The question tests understanding of the cell cycle and its phases, specifically in relation to chromosomal studies. The cell cycle consists of interphase (further divided into G1, S, and G2 phases) and the mitotic (M) phase. Chromosomal studies, particularly karyotyping, require chromosomes to be condensed and visible.

## Why the Correct Answer is Right
The correct answer, **Metaphase**, is the phase where chromosomes are most condensed and aligned at the metaphase plate, making it ideal for chromosomal analysis and studies. During metaphase, the chromosomes are maximally compacted, and their centromeres are attached to the spindle fibers, allowing for clear visualization and analysis under a microscope.

## Why Each Wrong Option is Incorrect
- **Option A: G1 phase**. This is an early stage of interphase where chromosomes are not condensed and are actively involved in RNA synthesis and cell growth. Chromosomes are not visible or suitable for detailed study.
- **Option B: Anaphase**. While chromosomes are separated during anaphase, they are moving towards opposite poles of the cell. Although they are still somewhat condensed, their separation makes chromosomal studies, like karyotyping, impractical.
- **Option C: Telophase**. Chromosomes begin to de-condense during telophase, reforming into chromatin, and nuclear envelopes start to reform around each set of chromosomes. This makes telophase less suitable for detailed chromosomal analysis.

## Clinical Pearl / High-Yield Fact
A key point to remember is that **karyotyping**, a process used to examine the chromosomes in a cell, is typically performed during the **metaphase** stage of mitosis. This is because, during metaphase, the chromosomes are maximally condensed and can be easily visualized and analyzed for genetic abnormalities.

## Correct Answer: B. Metaphase