The strange case of twins of different father that amazes scientists in Colombia
A group of scientists from the National University of Colombia documented the case of twins of different parents, during the study of evidence requested by a man who investigated the paternity of children.
The case began in August 2018 when the group of population genetics and identification of the National University of Colombia (UNAL) received a request to establish the paternity of two male twins with genetic markers, by the alleged father, who suspected hiskinship with the children and required evidence.
According to a statement from the news agency of the National University, after carrying out the DNA's comparison of the alleged father of a couple of twins, the group "evidenced that this coincided with the genetic profile of only one of them, that is, that, thatFor the other it was an exclusion from fatherhood ".
Scientifically the case is known as the heteroparternal superfoundation, a rare phenomenon that happens when a second ovule, released during the same menstrual cycle, is fertilized by a sperm of a different man in separate sexual intercourse.
Dr. Lilián Andrea Casas Vargas said that when there are very difficult cases or you want to be sure of the result of paternity tests, the laboratory performs other markers.In this case, he added the information, he became known as "chromosome panel and", taking into account that the twins are of the male gender, Casas explained.
The scientist said that this procedure is a tool quite used in parental affiliation tests."The chromosome and is secreted only by the paternal line, and does so in block from one generation to another, never changes".
"Then, not changing, these chromosome markers are expected to be completely identical to that of the father.In this case, the genetic profile coinciding with one of the twins is observed again, while with the other 14 of 17 non -coincidences were identified, which corroborated exclusion, "adds the information.
Casas pointed out that by protocols established in the laboratory, when a paternity case arrives and this results in "exclusion" the entire process is repeated to corroborate that there were no technical errors during the analysis.
This is how they called those involved again to those who were taken other samples and the results were equal, so the case was confirmed, whose report was published in the biomedical magazine of the state national Institute of Health.
Ju (Efe, spectator.com, Publimetro.co, week.com)
