Final answer:
The germinal stage results in the formation of a zygote through fertilization, followed by the creation of a morula and then a blastocyst, which implants in the uterine wall.
Step-by-step explanation:
During the germinal stage, the fertilized egg, known as a zygote, is created, and cell division takes place. This stage starts with fertilization in the Fallopian tube and continues as the zygote undergoes several initial cell divisions to form a solid ball of cells called a morula. Subsequently, the morula undergoes further changes to become a hollow ball of cells known as a blastocyst. This stage lasts about eight to nine days and ends when the blastocyst implants in the endometrium of the uterus. During the journey from the Fallopian tube to the uterus, the embryo is nourished by cell cytoplasm or uterine secretions. After implantation, the embryo will begin to obtain nutrients from the mother's blood via the placenta, but during the germinal stage, resources are limited to what is available in the reproductive tract.
During the germinal stage of human development, the fertilized egg, known as a zygote, is created through the process of fertilization. Cell division then takes place as the zygote undergoes several initial divisions to form a solid ball of cells called a morula. The morula then goes through additional changes to become a hollow ball of cells called a blastocyst. The germinal stage ends when the blastocyst implants in the endometrium of the uterus.