Why are females circles and males are squares in pedigree charts?

Subject: Why are females circles and males are squares in pedigree charts?

Date: Wed Feb 9 17:23:55 2005
Posted by Brad
Grade level: teacher/prof School: Everett High School
City: Everett State/Province: WA Country: USA
Area of science: Genetics
ID: 1107991435.Ge

Message:


I am a High School Science teacher and my students are currently using 
pedigrees to study genetic disorders. I have been unable to determine why when 
using these charts females are circles and males are squares. The only answer 
that I have ever gotten from anyone is "because that is what the book says."

Re: Why are females circles and males are squares in pedigree charts?

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