Some cancers show increased incidence with age while others peak at younger ages. Why do you suppose that some cancers have increased incidence with age while others peak in children?
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Some cancers show increased incidence with age while others peak at younger ages. Why
do you suppose that some cancers have increased incidence with age while others peak in
children?
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- What is the relationship betweenobesity and cancer?Why is the tumor microenvironment important to cancer progression?Despite all that we know about cancer today, some types of cancers are still increasing in frequency. Lung cancer among nonsmoking women is one of these. What reason(s) might there be for this increasing problem?
- A genetic predisposition to developing cancer is usually inheritedas a dominant trait. At the level of cellular function, are the allelesinvolved actually dominant? Explain why some individuals whohave inherited these dominant alleles do not develop cancer duringtheir lifetimes.Describe two mechanisms by which genetic change causes cancer.Although cancer is not a contagious disease in humans or other vertebrates, there have been rare cases in which cancers have spread from one organism to another. Describe three cases of these contagious cancers and what conditions might have led to their appearance. For an introduction to this topic, see http:// www.cancer.org/cancer/cancerbasics/is-cancer-contagious.
- What is one type of cancer (in humans or other organisms) that you are familiar with or interested in? How often does this cancer occur? What are some genetic causes of this type of cancer?What determines the stages of cancer?In order for certain cancers to propagate, they require a growth factor known as Vascular Endothelial Growth Factor (VEGF). What does VEGF signal the cell to do and how does this promote the propagation of cancer cells?