In human fertilization, a released ovum (a haploid secondary oocyte with replicate chromosome copies) and a haploid sperm cell (male gamete) combine to form a single diploid cell called the zygote.

Zygote, fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm). In the embryonic development of humans and other animals, the zygote stage is …

Nov 18, 2025 · A zygote, also called a fertilized egg, is the phase of conception where the egg and sperm join to form a single cell. The zygote contains a full set of chromosomes, with 23 from the egg …

Oct 15, 2024 · “Zygote” is the term used to define the very earliest stage of pregnancy, when a sperm and egg first unite, according to research published through the National Institutes of Health (NIH).

Aug 3, 2023 · A zygote is the first diploid eukaryotic cell that resulted from the fusion of haploid gametes (sperm and an ovum) during sexual reproduction. It is the initial stage of an embryo from which a …

Jun 2, 2024 · A zygote is the simplest form of life, so once a zygote is formed, it proceeds to split and divide into new cells that organize and form more complex structures.

Jul 31, 2025 · The zygote is the earliest developmental stage in humans and most other sexually reproducing organisms. It contains all the genetic information that guides its subsequent development.

Feb 2, 2024 · When a sperm fertilizes an egg, a zygote is formed – and pregnancy begins. A zygote is the very first form your baby takes – before they're even in the womb. Read on to find out how and …

A zygote is the initial cell produced through reproduction in humans and most other organisms. From the Greek word meaning to join or to yoke, a zygote is a single cell made by the fertilization, either …

The zygote is the first diploid cell that forms following fertilization by fusion of the haploid oocyte (egg) and spermatozoa (sperm) resulting in the combination of their separate genomes.