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  2. Fertilization | Steps, Process, & Facts | Britannica

    www.britannica.com/science/fertilization-reproduction

    Fertilization, union of a paternal sperm nucleus with a maternal egg nucleus to form the primary nucleus of an embryo. In higher organisms the essence of fertilization is the fusion of the hereditary material of two different sex cells. Learn about the process of fertilization in this article.

  3. Fertilization Definition. Fertilization is the process by which male and female gametes are fused together, initiating the development of a new organism. The male gamete or ’sperm’, and the female gamete, ’egg’ or ’ovum’ are specialized sex cells, which fuse together to begin the formation of a zygote during a process called sexual ...

  4. Human fertilization - Wikipedia

    en.wikipedia.org/wiki/Human_fertilization

    Human fertilization is the union of an egg and sperm, occurring primarily in the ampulla of the fallopian tube. [1] The result of this union leads to the production of a fertilized egg called a zygote, initiating embryonic development. Scientists discovered the dynamics of human fertilization in the 19th century.

  5. What Is Fertilization and How Does It Happen? - What to Expect

    www.whattoexpect.com/getting-pregnant/fertility/how-fertilization-happens.aspx

    Fertilization is when a man’s sperm combines with a woman's egg to form a single cell. It’s one of the first steps toward pregnancy, but there are more hurdles to cross. Where does fertilization occur?

  6. Fertilisation - Wikipedia

    en.wikipedia.org/wiki/Fertilisation

    Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, syngamy and impregnation, [1] is the fusion of gametes to give rise to a zygote and initiate its development into a new individual organism or offspring. [2]

  7. Conception: Fertilization, Process & When It Happens - Cleveland...

    my.clevelandclinic.org/health/articles/11585

    Conception happens when sperm swims up through the vagina and fertilizes an egg in the fallopian tube. It happens in the hours or days after you have unprotected sex. After conception, the fertilized egg implants into the uterus and a pregnancy begins.

  8. Embryology, Fertilization - StatPearls - NCBI Bookshelf

    www.ncbi.nlm.nih.gov/books/NBK542186

    Fertilization is a complex multi-step process that is complete in 24 hours. The sperm from a male meets an ovum from a female and forms a zygote; this is the point in which pregnancy begins and leads to a 280-day journey for a female.

  9. Understanding Fertilization - Ask A Biologist

    askabiologist.asu.edu/fertilization

    For some organisms, sperm and egg fuse in the middle of an ocean, river, pond, or puddle. For others, sperm and egg fuse inside one of the parents. These two ways of fertilization (egg meeting sperm), are called external fertilization and internal fertilization.

  10. Fertilization - Egg Activation, Sperm Fusion, Zygote | Britannica

    www.britannica.com/science/fertilization-reproduction/Events-of-fertilization

    Fertilization - Egg Activation, Sperm Fusion, Zygote: The acrosome reaction of spermatozoa is a prerequisite for the association between a spermatozoon and an egg, which occurs through fusion of their plasma membranes.

  11. 43.5A: Fertilization - Biology LibreTexts

    bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology...

    Fertilization is the process in which gametes (an egg and sperm) fuse to form a zygote. The egg and sperm are haploid, which means they each contain one set of chromosomes; upon fertilization, they will combine their genetic material to form a zygote that is diploid, having two sets of chromosomes.