I’m unsure if it’s an increasing trend. If anything, it should be decreasing due to the science advancements that enable DNA testing. Humans are like animals, you can’t control everybody, some people make unpredictable choices. If somebody is sleeping around & doesn’t know who the Father of their child is it just means they are a bad person. I don’t think as a whole it is increasing though.
That is just the simple truth about the whole matter, for person not able to identify the father of who her child is, it means she of a very high infidelity and questionable character. DNA can't eradicate this completely because it nit people to control human being but can limit some occurance as many will take caution with recent happening, DNA has reduced 75% of intended woman having the feeling of transferring another man child to the man they love due to material thing.
: When a woman has sexual relationships with more than one partner within the same timeframe, this can lead to uncertainty about the biological father of the child conceived during this time.
Op I stand to be corrected, but I want tell you that as much as woman is concerned except those that are not physically fit due ot illness no woman that don't know the father of their child right from the first day they have intercourse is made even if the woman have more than five man and has sex with them with range if time interval. The issue is the choice of woman selecting who to father their child due to financial stability of the man because they love more comfort that is the reason