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'''Heteropaternal superfecundation''' is a rarely occurring [[medical]] condition, the term describing the [[fertilization]] of two or more [[ovary]] by [[sperm]] from different males. According to Academic Dictionaries & Encyclopedias, "A woman who has sexual relations with two or more men at short intervals within the same ovulatory period can be impregnated by both men," thus twin newborn children are half-brothers or half-sisters with different [[father]]s. Among some animal species, however, it is quite common(such as cats). <ref>[http://dic.academic.ru/dic.nsf/enwiki/1095474 Heteropaternal superfecundation] Academic Dictionaries & Encyclopedias</ref>

'''Heteropaternal superfecundation''' is a rarely occurring [[medical]] condition, the term describing the [[fertilization]] of two or more [[ovary]] by [[sperm]] from different males. According to Academic Dictionaries & Encyclopedias, "A woman who has sexual relations with two or more men at short intervals within the same ovulatory period can be impregnated by both men," thus twin newborn children are half-brothers or half-sisters with different [[father]]s. Among some animal species, however, it is quite common(such as cats).<ref>[http://dic.academic.ru/dic.nsf/enwiki/1095474 Heteropaternal superfecundation] Academic Dictionaries & Encyclopedias</ref>

[[Category:biology]]

[[Category:Biology]]

[[Category:medicine]]

[[Category:Medicine]]

== References ==

== References ==

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<references/>

== External Link ==

== External links ==

* [http://news.sky.com/skynews/Home/World-News/Twins-By-Different-Fathers-Dallas-Mother-Mia-Washington-Shocked-At-DNA-Results/Article/200905315283642?lpos=World_News_Second_Home_Page_Article_Teaser_Region_5&lid=ARTICLE_15283642_Twins_By_Different_Fathers:_Dallas_Mother_Mia_Washington_Shocked_At_DNA_Results Mum's Shock At Twins With Different Dads]

* [http://news.sky.com/skynews/Home/World-News/Twins-By-Different-Fathers-Dallas-Mother-Mia-Washington-Shocked-At-DNA-Results/Article/200905315283642?lpos=World_News_Second_Home_Page_Article_Teaser_Region_5&lid=ARTICLE_15283642_Twins_By_Different_Fathers:_Dallas_Mother_Mia_Washington_Shocked_At_DNA_Results Mum's Shock At Twins With Different Dads]