how does fertilization happen?
487361
The capacitated spermatozoon and the oocyte meet and interact in the ampulla of the fallopian tube. In mammals, binding of the spermatozoon to the zona pellucida, an extracellular layer surrounding the oocyte, initiates the acrosome reaction. This process releases the enzyme hyaluronidase, which digests the matrix of hyaluronic acid in the vestments surrounding the oocyte. Fusion between the sperm and oocyte plasma membranes follows, allowing the entry of the sperm nucleus, mitochondria, centriole and flagellum into the oocyte. Once the ovum fuses with a single sperm cell, its cell membrane changes, preventing fusion with other sperm.\n\nThis process ultimately leads to the formation of a diploid cell called a zygote. When the zygote reaches the uterus and implants in the endometrium, the female is said to be pregnant.\n\nIf fertilisation takes place, the sperm usually meet the ovum in the fallopian tube, requiring the sperm cells to swim from the upper vagina through the cervix and across the length of the uterus before reaching the fallopian tube—a considerable distance compared to the size of the sperm cell.\n\n\nFertilization in plants\n\nAfter the pistil is pollinated, the pollen grain germinates in a response to a sugary fluid secreted by the mature stigma. From each pollen grain, a pollen tube grows out attempting to travel into the ovary by creating a path. The vegetative and generative nuclei of the pollen grain pass into its respective pollen tube. The growth of the pollen tube is controlled by the vegetative nucleus. Enzymes are secreted to digest the tissue of the stigma a style as the polen tube grows. The pollen tube does not directly reach the ovary in a straight line. It travels near the skin of the style and curls to the bottom of the ovary, then near the receptacle, it breaks through the ovule through the microphyle (an opening in the ovule wall) and reaches the ovum to fertilise it. This is the point when fertilisation actually occurs. After being fertilised, the ovary starts to swell and becomes a fruit.\n\nWith multi-seeded fruits, multiple grains of pollen are necessary for syngamy with each ovule. The process is easy to visualise if one looks at maize silk, which is the female flower of corn. Pollen from the tassel (the male flower) falls on the sticky external portion of the silk, and then pollen tubes grow down the silk to the attached ovule. The dried silk remains inside the husk of the ear as the seeds mature; if one carefully removes the husk, the floral structures may be shown. The development of the flesh of the fruit is proportional to the percentage of fertilised ovules. For example, with watermelon, about a thousand grains of pollen must be delivered and spread evenly on the three lobes of the stigma to make a normal sized and shaped fruit.
356272
when you have sexual intercourse and the egg is fertilized by the sperm.If anyone asks you didnt get it from me.
162501
There is only one place in a woman's body where she can get pregnant.  The sperm must enter the fallopian tubes which can only accessed from the vaginal tract.  Semen that is ingested will simply pass through the digestive tract and will be expelled with other food in feces.
494504
b)Unique to Angiosperms, flowering plants exhibit double fertilization whereby two sperm nuclei are deposited in the female gametophyte with each undergoing a fertilization event. The first sperm nucleus undergoes fusion with the egg cell nucleus forming the zygote while the second sperm nucleus undergoes fusion with the two polar nuclei of the central cell resulting in a triploid cell that proliferates through mitosis giving rise to the endosperm. The endosperm is often a source of nutrition for the developing embryo after fertilization and is often a starchy tissue.
512190
Many bats also delay implantation after the eggs are fertilized.  There are also several mammal groups that have delayed fertilization, holding viable sperm for months until they are ready to begin gestation, and then an egg cell is fertilized.\n\nThis is possible in placental mammals where the egg cell is kept internal, and doesn't have a shell to protect it from the outside environment.  I doubt that it would be possible in, for example, birds, where once the egg is formed it's pretty much a done deal, and development goes ahead regardless of outside conditions.
57763
are you not in high school yet? Well, two people have sex, sperm tries to make it to an egg in the female body once it does it latches on germinates and then a fetus is made. fetus grows into baby inside amniotic sac, once baby is born comes out of cervix and umbilical cord is cut and theres ur baby.
248309
When the developing fertilized ovum burrows into the endometrial layer, the layer reacts by becoming spongier. Sometimes there is bleeding then. Go to the library or online and look up the book by Lennart Nilsson called "A Child is Born". You will see pictures.
1071683
30-35% chance of becoming pregnant.  First, you have to ovulate at the right time.  Then you have to have intercourse at the right time and the sperm have to find their way to the correct fallopian tube which has the ovulating ovary at the end.  The sperm are fighting pH and all kinds of other "killer" stuff in your vagina, cervix, and uterus.  Half of them die for the "good" of the others and it's a rough time.  Finally, they have to break through the egg's defenses.  So, if everything was perfectly timed, then you could be pregnant.  It's almost like a game of chance.\n\nGood luck!
419290
the sperm is white becuase of seminal fluid, and if you mean diffusions as ejaculation then more sperms will try to fertillise the egg
1176921
artificial insemination...In vitro fertilization....
326591
the sperm is the tadpole lookin things and the semen is the stuff that a guy ejaculates. Yes semen definatly gets you pregnant as does the sperm.
322480
Birds actually go through the process of fertilizing an egg just like humans, except for birds this happens outside of the body whereas for humans it happens inside the body. So in reality, no actual 'sex' happens for birds...the male bird fertilizes the egg that the female laid, and the female sits on the egg while it gestates. \nGoodluck with that bird porn site, though.
655003
When the egg and the sperm fuse (in sexual reproduction) a single cell is formed.  That cell divides and divides and keeps on dividing until a full sized critter or plant is formed.\n\nSingle celled creatures reproduce by splitting in half to make two new critters.
543285
Meiosis only happens in sex cells. Mitosis happens in all other cells. When mitosis happens the cell splits in two. Meiosis forms 4 cells, in females only one is an egg, in males all four are sperm. Meiosis goes twice through every stage, ie   metaphase.
463499
pollination is the transfer of pollen from the anther to the stigma of a plant.  Fertillization is the creation by the physical union of male and female gametes, pollen and ovule in a plant
1115461
It's a pain, It happens when the females egg isn't fertilized, it's removed from the body and than a new one is put in it's place.\n\nIf fertilization and pregnancy do not ensue, the uterus sheds the lining, culminating with menstruation, which marks the low point for estrogen activity. This manifests itself to the outer world in the form of the menses (also menstruum): essentially part of the endometrium and blood products that pass out of the body through the vagina. Although this is commonly referred to as blood, it differs in composition from venous blood.
751780
I believe it's called oogenesis, the creation of an ovum (egg cell) in the ovarian follicle of the ovary.