Re: Y DNA question #dna

Eva Lawrence
 

As I understand it, every woman inherits DNA from their father as well as from their mother in equal proportions (the double helix).  So people you share DNA with are just as likely to be relatives on your father's side as on your mother's.  Each gene consists of many chromosome-pairs  One of each pair comes from  the father, the other from the mother. Different human characteristics are influenced by different chromosome-pairs on the gene  but only one particular  pair  determines the sex of the child.  It's only this single chromosome .pair that can have a male-type Y chromosome which has to be passed on from the father and acts like a gender switch. .  The same pair could well have an X-type chromosome from the father as well as from the mother, and result in a female child.  So you and your three sisters have as many chromosomes from your father as from your mother and  share DNA with your father's side of the family too,  even half-siblings.
Eva Lawrence
St Albans, UK.
  

--
Eva Lawrence
St Albans, UK.

Join main@groups.jewishgen.org to automatically receive all group messages.