Solution-Number one cause of skin cancer

1. Much pharmaceutical research targets developing anti-cancer drugs that can effectively stimulate the methylation of DNA. Formulate a possible hypothesis to explain why DNA methylation might be an effective anticancer drug.

2. Both the human and the thale cress (a small plant) genomes contain about 25,000 genes. However, human beings are much more complex than the thale cress. Both organisms have introns in their genes. Offer a possible explanation for why a human is more complex than thale cress even though they have similar number of genes.

3. Exposure to the sun is the number one cause of skin cancer. Explain how UV light can cause DNA mutation. What is the mechanism that our body uses to try to control this type of DNA damage?

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