Describe how mutations lead to genetic variations . which appears to be more dangerous: the brc1 or brc2 mutation? analyze a woman’s risk of dying of cancer if she carries a mutated brc1 gene.

Both BRCA1 and BRCA2 increase risk of cancers. It appears that BRCA1 is more likely to cause cancer in 55% to 65% of women who have it, compared to 45% only in BRCA2. According to the NIH Nat’l Cancer Institute, BRCA1 carriers tend to suffer increased risk from having another cancer after having been treated with the first one, and also have cancers that are more difficult to treat.

Mutations refer to the modifications in DNA that can influence the genetic variation as genetic variation monitors various genes in the populations of organisms, giving genetic material for the natural selection.  

The BRC1 mutation seems to be more threatful due to the percentage of deaths being 18 in comparison to the percentage of deaths with BRC1 being 2.8 percent.  

If a woman carries a mutated BRC1 gene, then the threat of woman dying of cancer becomes higher in comparison if she carries a BRC2 gene, however, this is applicable if she inherits a harmful mutation in the BRC1 genes.  

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.