Who holds two mutually incompatible belief systems. Either way, glad you said that anyway. So are you referring to me or those who believe in the form process of evolution without wavering along with the "immaculate conception??" Which one are you talking about. And can you possibly explain how the "immaculate conception" of Jesus by Mary can happen logically by the theory of evolution. Maybe you can pretend you're the Pope who said Mary is eternally a virgin, and then explain if that happened by natural way of evolution and conception. I think you cannot explain how the two (evolution as the considered way humans come about) and a virgin conceiving without having sexual relations at that time? And, then, according to the church and some, staying "eternally virgin"?
The case of Mary becoming pregnant without fertilisation of the ovum and sperm, is biologically improbable and impossible for humans, PERIOD!
While asexual reproduction (parthenogenesis) is possible for vertebrates like reptiles, birds, and even more so with amphibians and fishes, among mammals (including humans), it cannot happen biologically. But far more common, asexual reproduction can occur with invertebrates.
The problem with human ovum, is that it always contains half of the number of chromosomes. Mary’s egg would only have 23 chromosomes. The other 23 chromosomes will have to come from the human sperm.
Human reproduction cannot occur without the fertilisation of ovum and sperm. The fusion of these 2 seperate cells into one (one cell called zygote), during fertilisation, is what unify two pairs of 23 cells into 46 chromosomes in a zygote. Without the 46 chromosomes, the zygote going through a series of cell division couldn’t happen.
If Jesus is human, then he should have the full 46 chromosomes, just as Mary do, but the ovum (unfertilised egg) will only have 23 chromosomes. So where did the other 23 chromosomes come from, if it didn’t come from a sperm?
You should understand this, as human reproduction can occur through sexual reproduction, not asexual reproduction. This same biological rule applied to all mammals. Humans are biologically incapable of asexual reproduction, like parthenogenesis, YoursTrue. Humans are mammals, not reptiles or amphibians.
This “immaculate conception“ is a myth, not biologically possible.