When does phenomenal moment of existence occur...?

Otherwise titled: Regaling eldest sibling
delineating her sixty third successful orbit
around the sun December first 2021.

About consciousness who can tell
After haploid gametes
able, eager, and ready
to yield eukaryotic (diploid) cell?

What triggers instantaneous
biological, ideological, ontological process,
when microscopic entity
housing protoplasmic substance
future offspring features yet to foretell
said constituent contents
of future embryonic entity
most often equally dispersed
(Siamese births characterizing exception)
after life sustaining material
subsequently doubles, quadruples,
increases eightfold, sixteen fold...
courtesy mitosis
(also known as equational division)
only nine months later will quell?

However lay person or scientist
may explain what appears
as some mysterious phenomena,
each organism also
offers tell tale miracle
when conception occurs.

Particular case in point
regards unsuspecting union
of ova and spermatozoa
~late February/Mid-March 1959
constituting first time parents
Harriet and Boyce Harris
approximately nine months later
after full term pregnancy
about 280 days or 40 weeks
welcoming their beautiful baby daughter,
(the first of three offspring)
named Amelie Beth Harris.

Once upon a time
(said charming lovely little girl
frequently on the lookout
for welfare of her sole brother
me, a frequent scapegoat for bullies
would not countenance
yours truly suffering verbal brickbats,
out the mouths of nasty brutes,
hence as long as she lives)
forever anointed, dubbed, and heralded
from the mindscape of Matthew Scott
mine amazing saving grace,
a divine angel
donning a figurative golden halo.

When this har grown man
a little boy, prepubescent kid
and emerging young adult,
he never recognized the worth
(albeit priceless true value)
regarding his eldest kinfolk

Unbeknownst to him
(i.e id est - me) until quite recently
afflictions he experienced
within these lovely bones of mine
vicariously felt by aforementioned
family member, whose unbounded
emotional sensitivity
coupled with pleasantly
unexpected monetary largesse
represents unsung hero.

Impossible mission to reciprocate
countless occasions said sibling
helped (née rescued) beetle browed
little feet skittering away
property foo fighting beastie boy
who concludes his poem courtesy Google:
Skidamarink a dink a dink,
Skidamarink a doo,
I love you.
Skidamarink a dink a dink,
Skidamarink a doo,
I love you.

I love you in the morning
And in the afternoon,
I love you in the evening
And underneath the moon;
Oh, Skidamarink a dink a dink,
Skidamarink a doo,
I love you!