**Core Concept**
Burkitt's lymphoma is a highly aggressive B-cell non-Hodgkin lymphoma characterized by a specific chromosomal translocation involving the MYC gene. This translocation leads to the overexpression of the MYC protein, resulting in uncontrolled cell proliferation.

**Why the Correct Answer is Right**
The correct translocation in Burkitt's lymphoma involves the long arm of chromosome 8 (8q24) and the immunoglobulin heavy chain locus on chromosome 14 (14q32). The resulting fusion gene, t(8;14), leads to the overexpression of the MYC protein, which is essential for cell growth and proliferation. The MYC protein binds to DNA and regulates the transcription of genes involved in cell cycle progression. In Burkitt's lymphoma, the MYC protein is overexpressed, leading to uncontrolled cell growth and tumor formation.

**Why Each Wrong Option is Incorrect**
**Option A:** The t(12;14) translocation is not characteristic of Burkitt's lymphoma. This translocation involves the immunoglobulin heavy chain locus on chromosome 14 and a different partner chromosome, which is not associated with Burkitt's lymphoma.
**Option C:** The t(4;8) translocation is not a known chromosomal abnormality in Burkitt's lymphoma. This translocation involves chromosomes 4 and 8, but it is not associated with the MYC gene or Burkitt's lymphoma.
**Option D:** The t(12;18) translocation is associated with a different type of lymphoma, known as follicular lymphoma. This translocation involves the BCL2 gene on chromosome 18 and the immunoglobulin heavy chain locus on chromosome 12.

**Clinical Pearl / High-Yield Fact**
Burkitt's lymphoma is a highly aggressive lymphoma that requires prompt treatment. The t(8;14) translocation is a diagnostic hallmark of Burkitt's lymphoma, and its presence can be confirmed by fluorescence in situ hybridization (FISH) or PCR.

**✓ Correct Answer: B. 8 - 14 translocation**