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Date Posted: 18:10:48 05/13/02 Mon
Author: Andrea Felice
Subject: Question 3

Negative results from a breast cancer test can be a huge false sense of security because so many factors can cause breast cancer that the genetic tests can't pick up on. Though Lani may not have the genetic marker, her own DNA could mutate in her lifespan, possibly causing cancer; this mutation may not be recognized by the test. Also, if the test only picks up on inherited gene mutations, then it misses any non-inherited mutations, many which can result from environmental conditions. Many cancers are partially caused by poor environmental conditions, which the tests cannot always detect.

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