what is a zygote
http://psychology.about.com/od/zindex/g/def_zygote.htm
A zygote is the initial cell formed when two gametes, which are reproductive cells, come together during sexual reproduction. In humans, a zygote is formed when a sperm cell fertilizes an egg cell.
To understand what a zygote is, you can follow these steps:
1. Start by understanding the process of sexual reproduction. In sexual reproduction, two parents contribute their genetic material to form offspring.
2. Know that gametes are the reproductive cells responsible for this process. In humans, the male parent produces sperm cells, while the female parent produces egg cells, also known as ova or oocytes.
3. Realize that when fertilization occurs, a sperm cell enters an egg cell, resulting in the fusion of their genetic material. This fusion forms a zygote.
4. Understand that the zygote is the earliest developmental stage of a multicellular organism, such as a human. It contains the complete set of DNA from both parents and holds the potential to develop into a fully formed individual.
5. Recognize that the zygote divides and goes through various stages of development, ultimately forming an embryo and later a fetus.
By following these steps, you can gain an understanding of what a zygote is and how it relates to the process of sexual reproduction.