Gene deletion

Gene deletion is a type of genetic mutation where a part of a chromosome or a sequence of DNA is left out during DNA replication. This genetic alteration can lead to a change in the genetic code, which can result in a variety of genetic disorders.

Overview

Gene deletion can occur in any location of the genome and can range in size from a single nucleotide to an entire set of chromosomes. The deletion of a gene or part of a gene can lead to a disease or abnormality if the missing DNA contains important genetic information.

Causes

Gene deletions can be caused by errors in meiosis, the process that produces egg and sperm cells, or they can be acquired during a person's lifetime as a result of exposure to environmental factors such as radiation or certain chemicals.

Effects

The effects of gene deletion can vary greatly depending on the specific gene that is deleted. Some gene deletions may have no noticeable effect, while others can cause serious health problems. For example, the deletion of certain genes can lead to conditions such as Prader-Willi syndrome, Angelman syndrome, and Williams syndrome.

Diagnosis and Treatment

Gene deletions can be diagnosed through genetic testing, which can identify changes in chromosomes, DNA, or proteins. Treatment for conditions caused by gene deletions typically involves managing the symptoms of the condition, as there is currently no way to replace or repair deleted genes.

See Also

• Genetic mutation
• Chromosome
• DNA replication
• Genetic disorders
• Meiosis
• Prader-Willi syndrome
• Angelman syndrome
• Williams syndrome
• Genetic testing

Gene deletion Resources
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