18. A study of the endangered saiga antelope (pictured at the beginning of the chapter) recorded the fraction of females in the
population that were fecund in each year between 1993 and 2001
(Milner-Gulland et al. 2003). A graph of the data is as follows:

*a mastectomy is the surgical removal of one or both breasts, either partially of fully. an oophorectomy is the surgical removal of an ovary or ovaries.analyze a woman’s risk of dying of cancer if she carries a mutated brc1 gene.how do heredity and inheritance relate to the data presented in these charts? what data would you need to see in order to draw conclusions about the effectiveness of preventive surgeries? what does the age at diagnosis tell you about the mutation? explain how breast-cancer genes are still present in the population, despite cancer-related surgeries and deaths.