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  1. Human fertilization - Wikipedia

    Human fertilization is the union of an egg cell and a 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 …

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

    Jan 2, 2026 · 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 …

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

    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.

  4. Conception: Fertilization, Process & When It Happens

    How does conception occur? Conception (or fertilization) is when sperm and an egg join together. It’s one of the many steps that happen to create a pregnancy.

  5. Understanding the Human Fertilization Process | Blog

    Aug 1, 2025 · In this post, we’ll walk through how fertilization works in humans—step by step—including where it happens, how long an egg is viable, and how this process is …

  6. Fertilization - Embryology

    In fertilization research, after humans the mouse is the most studied species followed by domestic and farm animals. The process of fertilization involves components of, and signaling between, …

  7. Embryology, Fertilization - StatPearls - NCBI Bookshelf

    Apr 17, 2023 · 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 …