MadSci Network: Genetics

Re: how much and what can a child inherit from grandmothers?

Date: Mon Jul 30 22:01:17 2001
Posted By: Michael Watson, Grad student, (biology) Have Undergrad degree in biomedical Engineering, Central CT State University
Area of science: Genetics
ID: 995376541.Ge


There are more than one gene that determines eye color (I believe more 
than four different genes).  Therefore, if you look at your parent's and 
grandparent's eye color there may be a difference.  My eyes are dark blue 
unlike my mother or father.  However, my youngest brother has light blue 
eyes like his maternal grandfather had.  It is possible but other factors 
could affect his eye color from the other side of the family

As to how much your grand child can inherit from you is as follows.  You 
and your husband each gave half of your DNA genes to your child (your 
grandson's mother or father).  THis means that half of this DNA is then 
passed on to your grandson so with very rough calculations it is possible 
that thre is 25% probability of your genes passing to your grandchild.  I 
hope this answers your question.


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