Men do not automatically deny paternity if the children their women give birth to do not bear a striking resemblance to them. Men in general do not require their children to be carbon copies of themselves. Such a thing usually only happens if a man thinks there is some reason to believe that his woman may have been unfaithful to him. One such reason could be that the child looks strikingly different from the father as well as the mother. If that is the case, the child being conceived by another man is a possible explanation and the more likely the greater the difference in appearance. Isn't all of this quite obvious?