Whether the “Bible” is quiet or not about the blood - THAT DOES NOT MAKE THE MEDICAL FACT LESS FACTUAl.
And, as I already stated .. the blood was crucial in that even the blood of animals used for sacrifice under the Old Covenant had to be “pure” to make the animal sacrifice fill the demand for repentence.
The blood of the animals was to take away the sins of the whole family for a year. Jesus’ blood took away the sins of the whole world - FOREVER.
However, if you look up the word “blood” in your Bible, you may find that it clearly states that Jesus “took his own blood and poured it onto the mercy seat”.
Now, please tell me why that was important ..?? could it be that Jesus blood was PURE enough to be our sacrifice .. and if so .. WHERE ON EARTH DID JESUS GET THAT PURE BLOOD ..??
It wasn’t “earthly” .. it was from His Father.
Therefore, Mary’s “sin” condition still existed .. and even she had to repent and receive salvation, and she also entered into the upper room whereby “... they all spoke in tongues”; as evidence of her new birth.
Human blood cells, like every other cell in the body, have 46 chromosomes, 23 of which are contributed by the father, 23 by the mother. A female egg always has X (female) chromosomes, whereas a sperm has either an X OR Y chromosome, so that an XX fertilzed egg, a zygote, is a Female, or an XY is a Male.
The Bible doesn’t tell us anything about the genetics of Jesus, however, we do know he was a normal male (as he was circumcised on the 8th day, and, was allowed into the Temple to worship (as only normal males were)).
I know of no scientific fact that makes “the blood contributed by the father,” as again, blood cells contain XX or XY chromosomes like all other human cells. [One reason why there are no real “trans-sexuals” as without artificial hormone treatments and surgery, everyone is either male or female—as they were born....and ALL their cells continue to have either XX (female) or XY (male) chromosomes(discounting very rare people with chromosome deformity/disease).] Children can and do have different blood types (A+, O-, etc.) than their fathers too.
If one were to guess—at the mystery of Jesus conception He would probably have XO chromosomes, where O is that unique set of 23 chromosomes created directly by the Holy Spirit. As someone indicated above, Paul descibes Adam as the culpable sinner in the Fall...and Eve as merely decieved... Hence perhaps our sin nature is actually passed on by the Human father’s chromosome...of which every human in history has had, coming down from Adam....except Jesus.
The creedal & biblical understanding though is simply, mysteriously, that Jesus is fully God and fully Man, one Person with two natures.
Again though, we need to remain uncertain as to how Jesus conception came about....since Holy Scripture doesn’t say, and leaves it a mystery. This is where Rome has made a mistake—by proposing HUNDREDS OF YEARS AFTER THE EYE-WITNESS TESTIMONY OF THE APOSTLES (the New Testament) an idea of Mary’s own immaculate conception—to try to explain, what God’s Word does not. Mary’s immaculate conception really is pure myth.