CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -A blastocyst is a ball of cells that forms early in a pregnancy, about five to six days after a sperm fertilizes an egg. It implants in your uterine wall, eventually becoming the embryo and then the fetus.

Detailed explanation-2: -And at the end of 3 days, the fertilized egg cell has become a berry-like structure made up of 16 cells. This structure is called a morula, which is Latin for mulberry. During the first 8 or 9 days after conception, the cells that will eventually form the embryo continue to divide.

Detailed explanation-3: -The fertilized egg (zygote) divides repeatedly as it moves down the fallopian tube to the uterus. First, the zygote becomes a solid ball of cells. Then it becomes a hollow ball of cells called a blastocyst.

Detailed explanation-4: -After fertilization, the development of a multicellular organism proceeds by a process called cleavage, a series of mitotic divisions whereby the enormous volume of egg cytoplasm is divided into numerous smaller, nucleated cells.