Fertilization

From Wikipedia, a free encyclopedia written in simple English for easy reading.

Fertilization (English spelling: fertilisation) is what happens when a male's sperm goes inside of a female's ovum (or egg) and form a zygote. Fertilization is also called conception.

In humans, biologists call a fertilized egg a zygote. It is called an embryo from 3-8 weeks (the embryonic period.) Then after 8 weeks, it is called a fetus.

If it continues to grow normally it can eventually become a baby.

People have different beliefs about when life starts:

  • Some people believe that life begins at conception.
  • Some people believe that life begins after the embryonic period (when the organs form.)
  • Some people believe that life begins when the fetus is able to live outside of the woman.
  • Some people believe that life begins after a baby is born.

This difference in what people believe has led to many arguments over abortion.

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