Original Sin and Y Chromosome   
 
  Men and women are both born with original sin/sin nature. But only man transmits original sin / sin nature. Woman are recipient only and does not transmit original sin/sin nature.

        

I believed in dichotomy and that at the fall, both the material and immaterial aspects of us were all corrupted. Every single cell, chromosomes/DNA of our material body were corrupted. If we believed that life starts at the moment of conception, when a single fertilized egg starts to divide and grow into a human being, then it would mean that we inherited corrupted  23 chromosomes from each of our parent and that life of an individual is procreated from a corrupted cell. 

    

 Psalm 51:5  Surely I was sinful at birth,

sinful from the time my mother conceived me.

Biological background:

1. Human has 23  pairs (n=46) of chromosomes. Receiving one set (n=23) from each parent. The 23^rd pair is either a pair of XX (female) or XY(male)
2. Gametes of female contain only X chromosomes, and no Y. While male has both X and Y chromosomes.

Virgin birth is a supernatural act of God

a.       Miracle one – A virgin birth –  An unfertilized egg inside Mary started to undergo mitotic–division without fertilization. (The process of division is supposed to undergo mitotic division only when it is fertilized. Unfertilized egg degenerates when it travels to fallopian tube from ovary and is discharged from the body through menstruation.)

b.      Miracle two – Even if conception occurred and started to undergo mitotic-division without fertilization, because Mary’s body does not have Y chromosome, the offspring will always be a female and never a male.

c.       Miracle three – Jesus having the exact same chromosomes (identical DNA coding) as Mary, should have an identical physical feature as Mary- not to mention that the offspring of a virgin birth should have been a girl.

d.      Miracle four – God supplied the Y chromosomes by the power of the Holy Spirit in Jesus for him to become a man (not a woman)

Creation of Adam and Eve

• Gen 2:22 Then the Lord God made a woman from the rib (a part of) he had taken out of the man, and he brought her to the man.
  God could have made Eve from the dust just like He made Adam but instead God made Eve from a part taken out of Adam. Having the chromosomes/DNA of Adam, Eve should have been a male and have an identical physical anatomy with Adam. Is it possible that God took out the Y chromosomes from the part He took out of Adam when He made Eve
  
  is it possible that God took out the Y chromosomes from pre-fall Adam and held it in abeyance until Jesus?

Transmission of original sin

• Adam was given the command before Eve and became the guardian of the command. God had also put him in charge of everything. At the fall, Adam transgressed the law of God and abdicated his responsibility as the commander in chief. The consequences given to Adam were different from that of Eve although they both sinned alike. Following the concept of "Federal headship" , can we say that the transmission of sin is written in the Y chromosomes.
• In other words, Man becomes the transmitter of the original sin while women are recipient and not a transmitter of original sin/sin nature. Like men all women are also born depraved, but they do not transmit the original sin. This means when Jesus was born through a virgin birth- not known by man, he was born sinless.
• All human comes from a single fertilized cell. Therefore at the embryonic level, Y chromosomes becomes the transmitter of original sin while X chromosomes becomes the recipient and not as transmitter of original sin.
  
  When Mary conceived without the help of a man, the fertilized egg contain only X chromosomes and the offspring should have been a female. But …

Scriptural references
Romans 4:15  because the law brings wrath. And here there is no law there is no transgression.
1 Timothy 2:14  And Adam was not the one deceived; it was the woman who was deceived and became a sinner.
Romans 5:12   Death Through Adam, Life Through Christ ] Therefore, just as sin entered the world through one man, and death through sin, and in this way death came to all people, because all sinned— Note; (not Adam and Eve)
Romans 5:14  Nevertheless, death reigned from the time of Adam to the time of Moses, even over those who did not sin by breaking a command, as did Adam, who is a pattern of the one to come.
Gen 3: 16  And the Lord God commanded the man, “You are free to eat from any tree in the garden; 17 but you must not eat from the tree of the knowledge of good and evil, for when you eat from it you will certainly die.”
Gen 3;2  We may eat fruit from the trees in the garden, 3 but God did say, ‘You must not eat fruit from the tree that is in the middle of the garden, and you must not touch it, or you will die.’”
Luke 1:3  The angel answered, “The Holy Spirit will come on you, and the power of the Most High will overshadow you. So the holy one to be born will be called the Son of God

1 Corinthians 15:45  So it is written: “The first man Adam became a living being”; the last Adam, a life-giving spirit.


Conclusion
                Is it possible that God took the Y chromosomes from pre-fall Adam and held in abeyance and now put into the egg of Mary resulting in a XY / male offspring. Since the Y chromosomes was taken out of pre-fall Adam and that XX chromosomes of woman/female do not transmit original sin. therefore Jesus was born without sin. This also makes Jesus totally human having both X and Y chromosomes of a human being but free from original sin.

PS:  The above are just conjecture speculating what might have happened based on observable law of nature. Our beliefs must stay within what the Scripture has said and how we must respond.