Question: scientists have argued for many years that skin cancer was...
- Scientists have argued for many years that skin cancer was an
evolutionary driver that enforced the predominance of dark-skin
individuals in areas with high levels of sun exposure. Dark skin
does reduce the chance of getting skin cancer, but studies have
shown that skin cancer often occurs after individuals are 45 years
- Given the information provided above, could skin cancer explain the high selective pressure for dark skin in areas with high doses of sun exposure? Briefly explain.
- A different type of skin cancer is more prevalent in adolescents and can appear in areas with low or no sun exposure (e.g. armpits). This type of skin cancer is as frequent in light- skinned as in dark-skinned individuals. Could evolution through natural selection decrease the number of individuals that develop this type of skin cancer? Briefly explain.