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1. Describe how mutations lead to genetic variations. 3. Analyze a woman’s risk of dying of cancer if she carries a mutated BRC1 gene. 5. What data would you need to see in order to draw conclusions about the effectiveness of preventive surgeries? 7. Explain how breast-cancer genes are still present in the population, despite cancer-related surgeries and deaths.

MIT OCW Biology
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\(\Huge\text{I've been on this for 2 days.}\)
do you go to connections academy? if you do then i can help..
\(\Large\text{no, I go to Florida Virtual School D:}\)

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Other answers:

\(\large\text{you have no idea how frustrated I am over this assignment}\)
ill help you!!
ok so for #1 Mutations produce random changes in an organism's genetic code. Mutations can occur in non-reproductive cells and then they will not be passed to the next generation, thereforу will not contribute to genetic variation. Only mutations that occur in reproductive cells are passed on to the next generations and contribute to genetic variation in a population.
\(\Huge\text{♥}\)
workin on number two :)
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#2 Testing positive for BRCA1 cannot determine the likelihood of death, it that depends on stage, grade, hormone receptor status, etc.
thats the best i can do for number two :(
good enough :p
lemme know if you can get the other ones
because I am \(\Huge\text{clueless}\).
This looks like a helpful website.. if you cant find the answers message me and ill get them to you :) http://evolution.berkeley.edu/evolibrary/article/evo_17
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did you find them? i doubt you want to read all this but here is another helpful website :) http://www.ncbi.nlm.nih.gov/books/NBK44295/
Actually, I just need #7 now :D
by the way, that's the wrong kind of prevention in the second link... that's about violence in schools o.o
Got 7. Thank you so much for your help. Fan time!
I'd add a testimonial if I knew how.
a medal would be awesome :) and no problem :) glad to help :)

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