Stem Antics on Instagram: "✨ From a single cell to a tiny human in the making — the first 12 weeks of life are astonishing. Here’s how the journey unfolds: Month 1 (Weeks 1–4): • Fertilization creates a zygote, which implants in the uterus. • The embryo is about the size of a poppy seed. • The neural tube (future brain and spinal cord) begins to form. Month 2 (Weeks 5–8): • Tiny buds appear — arms and legs start developing. • Heart begins to beat and can be detected by ultrasound. • Facial featu