In one among 1,000,000 circumstances, a 19 years outdated Brazilian girl gave delivery to twins who’ve completely different organic fathers. It’s a particularly uncommon case that additionally surprised medical doctors the world over. Apart from being fairly uncommon, this conception story is actual and astonishingly unusual.
The brand new mother belongs to Minerios in Goias delivered twins after having intercourse with two completely different males on the identical day. She took a paternity check to verify the daddy of the infants. However, it results in fairly uncommon occasions in that each infants have completely different organic fathers. She carried out a DNA check to verify the daddy of the twins. However as stories disclosed, one of many children confirmed optimistic ends in the DNA checks.
After compiling the reminiscences, she mentioned, “I remembered that I additionally had intercourse with one other particular person too. I simply known as him to take the DNA check. The check outcome was optimistic, indicating this uncommon incidence of twins.” Although, it’s a particularly uncommon case taking place in hundreds of thousands. However, it’s attainable. This phenomenon is named heteropaternal superfecundation. On this phenomenon, a second ova produced through the menstrual cycle will get fertilized by the sperm of one other particular person and transferred by way of completely different sexual contact. After egg fertilization, the dual infants share the genetics of the mom.
The girl’s basic doctor Dr. Tulio Franco reported this case, contemplating it regular. The infants at the moment are virtually 16 months outdated, and fully wholesome. The mom additionally stories that one of many two males is legally registered on the registry workplace for taking good care of each infants.
Table of Contents
What’s heteropaternal superfecundation?
Superfecundation is a traditional process through which fertilization of two or extra ovum from the identical menstrual cycle happens by the sperm transferred by way of separate sexual activity. This phenomenon results in twin infants having completely different organic fathers. Heteropaternal superfecundation refers back to the atypical twinning of the infants, sharing the mom’s genetics however with completely different fathers.
What’s the widespread idea behind heteropaternal superfecundation?
Sperms have the capability to reside inside the feminine’s physique for about 5 days. After ovulation, the eggs stay for about 12 to 48 hours earlier than disintegration. This superfecundation course of normally happens inside hours or possibly days. As soon as the lady conceives and the being pregnant interval begins, ladies cease ovulating. It implies that no ova will likely be produced as soon as fertilization has occurred. It will increase the incidence of full being pregnant.
In one other case, it may additionally occur. A lady can launch two eggs in a number of days. So these eggs can fertilize with completely different sperm materials, resulting in heteropaternal superfecundation.
Heteropaternal superfecundation is commonest amongst canines and cats. In distinction, it’s fairly uncommon amongst human beings. One examine carried out on human beings instructed a frequency of about 2.4%.
Incidence of heteropaternal superfecundation
This phenomenon was first launched by Archer in 1810. In response to the media stories, there are solely 20 such circumstances reported but.
Often requested questions (FAQs)
Is it attainable to have twins with completely different DNA supplies?
There are a number of twins that will have completely different genetic materials. These similar twins differ solely about a median of 5.2 genetic mutations. So, it’s attainable for similar twins to have a number of adjustments of their DNA materials.
Is it attainable to fertilize the identical egg with sperm from two completely different individuals?
In widespread apply, a single sperm fertilizes a single egg. This type of double fertilization can happen in 1% of human pregnancies. A fetus produced this manner normally doesn’t survive. These cells are normally chimeras of X and Y chromosomes.