Melanoma primarily occurs in the skin, but it can also develop in other parts of the body, including the eyes (ocular melanoma) and mucous membranes. This type of skin cancer arises from the melanocytes, the cells responsible for producing pigment. Early detection and treatment are crucial, as melanoma can spread to other organs if not addressed promptly.
skin
These cancers would first appear on the skin.
skin
skin
skin
Ultraviolet radiation (part of sunlight).
Melanoma is a cancer of the skin. And the skin is technically a part of the integumentary system.
This type of mutation is known as a deletion.
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.
The same part that is the cleanest part of a man. Genitalia are, as a rule, full of natural bodily excretions. Which would mean that gender would not be relevant to the cleanest body part.