Translocation

Translocation is a biological phenomenon that involves the movement of a chromosome segment from one position to another, either within the same chromosome or to another chromosome. This process can lead to a variety of genetic disorders and is also a significant factor in the evolution of species.

Overview

Translocation can occur as a result of a number of different processes, including DNA repair, recombination, and chromosomal crossover. The resulting rearrangement of genetic material can have a variety of effects, depending on the specific genes involved and the nature of the translocation.

Types of Translocation

There are two main types of translocation: reciprocal and Robertsonian.

Reciprocal Translocation

In a reciprocal translocation, two different chromosomes exchange pieces, without any loss of genetic material. This type of translocation can lead to a variety of genetic disorders, including chronic myelogenous leukemia (CML) and acute lymphoblastic leukemia (ALL).

Robertsonian Translocation

Robertsonian translocation involves the fusion of two acrocentric chromosomes at their centromeres, with the loss of the short arms. This type of translocation is the most common form of chromosomal rearrangement in humans, and can lead to disorders such as Down syndrome.

Genetic Disorders

Translocation can lead to a variety of genetic disorders, depending on the specific genes involved and the nature of the translocation. Some of the most common disorders caused by translocation include Down syndrome, chronic myelogenous leukemia, and acute lymphoblastic leukemia.

See Also

• Chromosome
• DNA repair
• Recombination
• Chromosomal crossover
• Down syndrome
• Chronic myelogenous leukemia
• Acute lymphoblastic leukemia

Translocation Resources
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