Human fertilization is the union of a humanoid egg and sperm, usually occurring in the ampulla of the uterine tube. The result of this union is the production of a zygote, or fertilized egg, initiating prenatal development. Scientists discovered the dynamics of human fertilization in the nineteenth century.The process of fertilization involves a sperm (male reproductive cells) fusing with an ovum (female reproductive cells). The most common sequence begins with ejaculation during copulation, follows with ovulation, and finishes with fertilization. Various exceptions to this sequence are possible, including artificial insemination, In vitro fertilization, external ejaculation without copulation, or copulation shortly after ovulation. Upon encountering the ovum, the acrosome of the sperm produces enzymes which allow it to burrow through the outer jelly coat of the egg. The sperm plasma then fuses with the egg's plasma membrane, the sperm head disconnects from its flagellum and the egg travels down the Fallopian tube to reach the uterus. In the next 24 hours after the sperm meets the egg, fertilization would begin. A new cell is created and it starts diving rapidly. It travels further from the fallopian tube to the uterus and attaches itself in its walls. This is how a baby is formed and continues to grow within the secured walls of the amniotic sack.
Well, actually there are 200 - 600 million sperm normally found in ejaculate increases the chance that some will reach a mature egg, eventually with just one being able to enter and fertilize it. Meaning that out of those millions sperm, the only sperm that won the race was us (unless if you're a twin). So, yes! I'm the sperm who won the race!! Feeling great, right? But have you ever wondered if a different sperm had hit your mother's egg, would you still be you? & Would you be here now, if you'd lost that race?
I don't know if we could trust this article I found 100% but I do trust it (a little).
It DOES make a difference which sperm wins the race: Scientists scan 100 sperm from one man - and find huge DNA differences.
The 'race' betweeen human sperm to the eggs might just look like a bunch of wriggling tadpoles- but it makes a big difference which sperm wins. Even sperm cells from the same man have big genetic differences, a study has shown. For the first time, scientists have obtained genetic blueprints of almost 100 sperm from a single individual.
The results confirm what scientists already know, that every sperm is different because of the way their inherited DNA is shuffled.The process, known as recombination, mixes up genes passed down by a man's mother and father and increases genetic diversity.
Each of the 91 sperm studied showed an average of 23 recombination, or mixing, events. But individual sperm varied greatly in the way they experienced spontaneous genetic mutations.Every sperm contained between 25 and 36 ‘new’ mutations, not seen in other body cells.
Two sperm were found to be missing entire chromosomes, the protein-bound packages of DNA that contain the genes.Random mutations create genetic variation, but can be harmful if they occur in the wrong places.
The cells were donated by a 40-year-old man who has healthy offspring and normally functioning sperm.
‘For the first time we were able to generate an individual recombination map and mutation rate for each of several sperm from one person,’ said Professor Barry Behr, from Stanford University in California, US.‘Now we can look at a particular individual, make some calls about what they would likely contribute genetically to an embryo, and perhaps even diagnose or detect potential problems.’Genetically sequencing sperm could provide a ‘new kind of early detection system’ to identify men who may have trouble conceiving, he added.
Most cells in the human body have two copies each of 23 chromosomes, containing DNA inherited from both parents. However, sperm in men and eggs in women only have single copies.Recombination occurs before the chromosomes are partitioned. During a process called meiosis, pairs of chromosomes line up along the midsection of the cell. Portions of the chromosome pairs may then be randomly swapped, mixing up the inherited DNA elements.
This generates much more genetic variation than would be possible if only intact chromosomes were segregated into reproductive cells. It helps ensure that a baby inherits a blend of DNA from all four of his or her grandparents. Sperm and egg chromosomes pair up to produce the usual two-copy compliment after fertilisation.
So yes. I think that I would still be A me but not THIS me if another sperm had got there first. But I think I obviously would have different physical traits and personality if that had happened (but I'm glad I'm me).
And have you ever asked your parents why they gave birth to you? Parents did have a choice not to have a kid but they chose to have kids. If you feel you cannot ask this question to your parents, imagine asking this question to your Creator.
Who has the authority if Allah has to take your permission to create you? If you have the authority, does it not make Allah inferior to you? Can someone inferior to you be your God? Moreover, if we read the Quran, we will know that we have agreed to worship and obey Allah before we came to this earth. Of course, we don't remember it.That's why Allah in His infinite mercy has reminded us.The whole of Quran is a “reminder” and hence the name “dhikr” for the Quran.
“And [mention] when your Lord took from the children of Adam – from their loins – their descendants and made them testify of themselves, [saying to them], "Am I not your Lord?" They said, "Yes, we have testified." [This] – lest you should say on the day of Resurrection, "Indeed, we were of this unaware."
- Chapter 7: Verse 172
So Allah is only expecting us to fulfill what we have agreed to.
We have a choice to decide where we want to be and we can make a good choice by deciding to obey Allah in all possible ways and seek His forgiveness for our shortcomings. If that's too hard, we always have a choice to disobey and deceive ourselves in this short and temporary worldly life and end up in misery in the eternal life after death.
So, I think the reason why I'm me today is because I have agreed to be born in this world and to worship and obey Allah. However, I'm still trying to give my best to Allah and I'm so ashamed that I'm still so clueless on so many things even though I know I would never be perfect in any way no matter how hard I try. So, I just want to a better me, in every way.
Everyday wasn't the day I wanted it to be. I've always told myself to not to do things I told myself to stop doing but I would always fail.
As Maria Robinson once said, “Nobody can go back and start a new beginning, but anyone can start today and make a new ending.” I think I should just let it go and be happy the way I am and stop rushing myself to change immediately.
Every sperm is sacred, every sperm is great. If a sperm is wasted, God gets quite irate.
- Every Sperm Is Sacred, Monty Python
Never question why we're here. Never regret being who you are. Be happy because life's too short to wake up with regrets. Love with your heart & live with your faith. Keep your head up and nothing will bring you down.