What happened at conception was that these two halves were put in physical proximity with the correct molecular machinery and in a location where they would result in a baby.
As to when my daughter began to exist with a COMPLETE human genome - that was at conception. As to when those unique human DNA sequences were formed - days before conception for my half - decades before conception for my wife's half.
You said “When the sperm fertilized the egg - they both lose the DNA identity of their hosts, and a new DNA code is formed.” That is incorrect.
When sperm is formed in the testes it loses “the DNA identity of their host”, the DNA sequences are mixed between parental chromosomes and only HALF ends up in the resulting cells.
When eggs are formed (women do this while still unborn) those eggs lose “the DNA identity of their host”, the DNA sequences are mixed between parental chromosomes and only HALF ends up in the resulting cell.
Conception DOES NOT result in “a new DNA code” being “formed”. Conception results in two different unique DNA sequences (one a couple days old, the other a couple decades or more old) coming into physical proximity within the same cell.
Nothing special has to happen to the DNA for life to begin at conception - let alone ‘a new DNA code being formed’.
Two points.
One - conception does not result in anything different happening to the DNA other than the two halves being brought into physical proximity.
Two - ‘a new DNA sequence being formed’at conception is NOT necessary for a unique human life to begin at conception.
“As to when my daughter began to exist with a COMPLETE human genome - that was at conception. As to when those unique human DNA sequences were formed - days before conception for my half - decades before conception for my wife’s half.”
OK. Great! We agree! (BTW - congratulations)
“You said “When the sperm fertilized the egg - they both lose the DNA identity of their hosts, and a new DNA code is formed.” That is incorrect.”
OK - clumsy as I am, I am trying to make the point that at fertilization a new organism has formed. It has become it’s own life with it’s own fingerprint that is not “the same as” the fingerprint of either contributing parent. It then begins the stages of development of a human person.
By “identity” - what I am referring to is the ability to identify any huuman being by their dna fingerprint...or profile.
“DNA sequences are mixed between parental chromosomes and only HALF ends up in the resulting cells”
OK - Gotchya
“When eggs are formed (women do this while still unborn) those eggs lose “the DNA identity of their host”, the DNA sequences are mixed between parental chromosomes and only HALF ends up in the resulting cell.”
OK - Got that
“Conception DOES NOT result in “a new DNA code” being “formed”. Conception results in two different unique DNA sequences (one a couple days old, the other a couple decades or more old) coming into physical proximity within the same cell.”
ok - so like you said earlier - a complete human genome has been formed.
“Nothing special has to happen to the DNA for life to begin at conception - let alone ‘a new DNA code being formed’.”
hmmm....not sure what you mean by nothing special. The combination of the 2 cells that produces new life is quite special indeed. Just wait till sweet baby girl wraps daddy around her finger!