In today's society there are approximately seven billion human beings on Earth, but these individuals did not just magically appear. For this to be possible, a sperm must accompany an egg, also known as fertilization to create a human. Sperm and eggs are created through meiosis, which is a nuclear division that ends in haploid cells that create mature gametes. Once completed, the sperm starts out as a round cell and then generates a tail that gives it the mobility to swim to an egg and fertilize it. Fertilization can be achieved with the female reproductive system and with the male reproductive system. Overall, this system is a fusion of functional organs and hormones that cooperate together to generate life. The female reproductive system is subject to creating the female sex hormone and egg cell, receiving the egg cell from sperm, and providing a place for the fertilized egg to evolve. The male reproductive system is responsible for generating the male sex hormone, producing sperm, and transporting sperm to the female reproductive system. Once puberty is reached in females, hormones allow the reproductive system to create mature ovules or eggs. In the female body in the uterus there are two white ovaries, one is located on the left side and the other on the right side. Inside the ovaries are the eggs and when the female reaches puberty, her eggs will begin to mature each month. Once developed, they will be discharged and enter the fallopian tubes. As it travels through the tube, it is susceptible to being fertilized by a sperm through coitus. If fertilized, the egg will stick to the face of the uterus and eventually create a follicle and then a zygote... middle of paper... sperm must become sperm. To achieve this, the glands of the vas deferens, such as the prostate, bulbourethral, ​​and seminal glands, will be secreted to support and encourage the gamete. Overall, sperm is produced, which is a white, milky male reproductive fluid. As coitus occurs, a male becomes sexually aroused and ejaculates, which moves the sperm into the urethra and from there it will be inserted into the vagina and then into the fallopian tubes to be fertilized. All in all, the two reproductive systems work together with their unique structures to create life on Earth. Female and male organs allow for a fusion of genetic material, which allows for genetic variation. Since everyone begins life as a zygote, the cell has all the instructions to create a unique human being. Clearly, the system is responsible for its creation.