8 February 2012 Updated at 23:00 ET
Men can inherit a form of heart disease from father via Y chromosome
Michelle Roberts
Health reporter, BBC News
The Y chromosome determines that a baby will be a boy
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Men can inherit heart disease from their father say scientists who have tracked the condition to the Y chromosome that dads pass to sons.
link-
http://www.bbc.co.uk/news/health-16931585