Describe structural chromosomal aberrations.

Structural chromosomal aberrations are alterations in the structure of chromosomes, resulting from errors during cell division, particularly during meiosis and mitosis. These aberrations occur due to breaks in the chromosome, followed by faulty repair mechanisms, leading to rearrangements that can affect gene function. Structural chromosomal aberrations can lead to genetic disorders, developmental abnormalities, and diseases like cancer. They are classified into different types based on the nature of the chromosomal rearrangement.

One major type of structural chromosomal aberration is deletion, which occurs when a segment of a chromosome is lost. This results in a loss of genetic material and can have severe _________ ______ ___ ______ ________ _________ ____ _________ _____ ____ _________ ______.
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