if sperm not fuse with ovume what happened
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There was not formation of zygote. And fertilization not occurred.
justin4387:
the child not get develop
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Although it is happening every hour of every day, all over the world, the story of egg meeting sperm is still a tale worth telling. Millions of candidates set off on a long and perilous journey with a single target at the end, and if the candidates reach their target, something completely unique is created. But before we get to the end, let’s take a closer look at the journey.
The Main Characters

EggSpermHow many participate?1 per menstrual cycle~250-280 million per ejaculationSizeLargest diameter cell in the human body: ~0.12mm~ 50μm long (10,000x smaller than the egg)PloidyHaploid, but meiosis II uncompletedHaploid: 23 chromosomesMitochondria100-200,00075-100


Hundreds of millions of sperm vie for a single egg cell. The sperm cells are streamlined in design for this purpose: a long tail to help them move, lots of mitochondria to power that movement, genetic information to pass on, and enzymatic proteins to get into the egg cell. The proteins are stored in a cap at the front of the sperm known as an acrosome - this is the part that first contacts the egg. The tail is called a flagellum, and it uses the energy made by the mitochondria to move the sperm forward. Flagella use a lot of energy, so they’re kept dormant until sperm enter the vagina. Sperm are haploid; they contain one set of 23 chromosomes. They are created by the cellular division process known as meiosis, which creates 4 sperm from a single germ cell. They’re also very small, only about 50μm long. Sperm are ejaculated in semen, a basic fluid with a pH of about 7.4.
The sperms’ target, is the egg. Since it is so much bigger than sperm, the egg is the source of cytosol and organelles,particularly mitochondria, for the future zygote. Unlike sperm, the egg has not completed meiosis - it’s stuck in the Metaphase II stage of division. This means that the egg is haploid but with sister chromatids still attached to each other. Also unlike sperm, the meiotic division to create eggs, oogenesis, only makes one viable egg. The egg is covered in a thick outer coating known as the zona pellucida, a layer of carbohydrate-covered proteins that surrounds the plasma membrane. The zona pellucida helps protect the egg and is responsible for mediating the initial meeting of sperm and egg. Cortical granules filled with enzymes line the inside of the cell membrane, and will help make sure that only one sperm can fertilize the egg.
The Main Characters

EggSpermHow many participate?1 per menstrual cycle~250-280 million per ejaculationSizeLargest diameter cell in the human body: ~0.12mm~ 50μm long (10,000x smaller than the egg)PloidyHaploid, but meiosis II uncompletedHaploid: 23 chromosomesMitochondria100-200,00075-100


Hundreds of millions of sperm vie for a single egg cell. The sperm cells are streamlined in design for this purpose: a long tail to help them move, lots of mitochondria to power that movement, genetic information to pass on, and enzymatic proteins to get into the egg cell. The proteins are stored in a cap at the front of the sperm known as an acrosome - this is the part that first contacts the egg. The tail is called a flagellum, and it uses the energy made by the mitochondria to move the sperm forward. Flagella use a lot of energy, so they’re kept dormant until sperm enter the vagina. Sperm are haploid; they contain one set of 23 chromosomes. They are created by the cellular division process known as meiosis, which creates 4 sperm from a single germ cell. They’re also very small, only about 50μm long. Sperm are ejaculated in semen, a basic fluid with a pH of about 7.4.
The sperms’ target, is the egg. Since it is so much bigger than sperm, the egg is the source of cytosol and organelles,particularly mitochondria, for the future zygote. Unlike sperm, the egg has not completed meiosis - it’s stuck in the Metaphase II stage of division. This means that the egg is haploid but with sister chromatids still attached to each other. Also unlike sperm, the meiotic division to create eggs, oogenesis, only makes one viable egg. The egg is covered in a thick outer coating known as the zona pellucida, a layer of carbohydrate-covered proteins that surrounds the plasma membrane. The zona pellucida helps protect the egg and is responsible for mediating the initial meeting of sperm and egg. Cortical granules filled with enzymes line the inside of the cell membrane, and will help make sure that only one sperm can fertilize the egg.
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