After successful copulation........ occurs and the fetus develop?

After successful copulation, fertilization occurs when a sperm cell penetrates and fertilizes an egg cell. The fertilized egg then implants itself in the lining of the uterus and begins to develop into a fetus. The fetus goes through various stages of development, including the formation of organs, limbs, and features, until it is ready to be born. This process typically takes around 9 months in humans.

Fertilization