There were reports in the media recently that conditions were conducive for creation of life on Mars at one time and that life may have come to earth from that planet. I was reminded of the old adage that Men are from mars and the Women from Venus. However, it is not necessary to limit one’s imagination to just Mars or Venus once one has read and understood the theory of Panspermia (or its modification Pansmeria) described in several posts of this blog. The posts describe in detail how it is possible for bacteria in hibernation to arrive on Earth from virtually any part of the universe, from far away galaxies and even other galaxies over millions and billions of years. Within these bacteria are the genetic codes for all life forms that exist on earth and those that are yet to appear. Bacteria even carry the gene of advanced life forms on a planet because they can be infected by viruses carrying break away genes from advanced life forms.
The genetic make up of bacteria is such as can be modified easily, and once modified replicate as they multiply by duplication rather than sexual reproduction that tends to eliminate such modification during reproduction. It does seem that it is at the level of bacteria and viruses that creation of new life forms takes place and it is an ongoing process, with most new variation rejected but few becoming a part of the genetic pool of life in the universe. It is only when a gene is integrated in a higher life form that it can be perpetuated near endlessly because of a continuous rejection of erroneous mutations through the process of sexual reproduction