Chromosomal aberrations are of many types. They are different from each other because:
• Deletion: In this, deletion or disappearance of a specific sequence of a chromosome occurs.
• Duplication: It duplicates the specific part of a chromosome and leads to extra genetic material.
• Translocation: In this one portion of a chromosome is transferred to another chromosome.
Further Explanation:
Chromosomal aberration is referred to as abnormality in the sequence or the arrangement of the chromosome. These abnormalities affect the normal function of the chromosome. It can develop mainly due to two reasons one condition is developed due to abnormalities in the number of chromosomes. One of the examples is Down syndrome that is developed due to the presence of one extra chromosome. Another example of this is turner syndrome that is developed due to the loss of one chromosome. These problems are referred to as numerical aberration.
Another condition is developed due to Structural aberration. In this, the specific sequence is affected. Some examples of structural aberration are:
• Deletion: In this, the particular sequence is missing from the chromosome.
• Duplication: In this, some part of the chromosome is duplicated.
• Translocation: In this, part of the chromosome is moved to another chromosome.
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Answer Details:
Grade: High School
Subject: Biology
Topic: Chromosomal aberration
Keywords: Chromosomal aberration, abnormality, translocation, deletion, duplication, chromosome, turner syndrome, down syndrome, syndrome, moved, function.
