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skin
These cancers would first appear on the skin.
skin
skin
skin
Ultraviolet radiation (part of sunlight).
This type of mutation is known as a deletion.
Melanoma is a cancer of the skin. And the skin is technically a part of the integumentary system.
Deletion
the final part of the body is foot
It would be as if a part of a chromosome were lost. This is called a deletion. It can cause a gene to be lost or not expressed. Several genetic disorders are caused by this process.
which part of the body is affected by pyorrhoea