how do i do a punnett square for breast cancer?

“My wife had developed breast cancer last year and was on chemo. She lost her hair and everything. She got tired of it. The last test she took showed the cancer was beginning to spread. They said she needed to have her breast removed. She got scared. A friend of mine suggested I try your book. So I went online and bought a copy. I gave it to my wife and she took to heart everything in it. Within three weeks her hair began growing back. She went to have another test done and found her cancer gone. I owe you one.”

Ed McHugh
New York

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Winning The Fight Against Breast Cancer