What is the correct sequence of development from gamete to fetus?

• A. Gamete -> Zygote -> Embryo -> Fetus
• B. Gamete -> Embryo -> Zygote -> Fetus
• C. Zygote -> Gamete -> Fetus -> Embryo
• D. Fetus -> Embryo -> Zygote -> Gamete

Answer: (A)

The correct sequence of development from gamete to fetus is Gamete -> Zygote -> Embryo -> Fetus. This process begins when two gametes (sperm and egg) fuse during fertilization to form a zygote. The zygote is a single fertilized cell that undergoes rapid cell division, leading to the formation of an embryo. During the embryonic stage, the foundations of the organs and structures of the body are established. As development continues, the embryo eventually develops into a fetus, which is characterized by more advanced development and maturation of bodily systems. This timeline highlights the progression of human development, marking the significant stages from conception to the later stages of gestation.