AP PSYCHOLOGY

Detailed explanation-1: -Post fertilization the cells formed undergoes the following stages : The zygote begins to divide via mitosis after fertilization. The solid ball of cells known as a morula is made up of 8-16 blastomeres . It then divides and differentiates further to form a hollow ball known as a blastocyst.

Detailed explanation-2: -morula, solid mass of blastomeres resulting from a number of cleavages of a zygote, or fertilized egg. Its name derives from its resemblance to a mulberry (Latin: morum). A morula is usually produced in those species the eggs of which contain little yolk and, consequently, undergo complete cleavage.

Detailed explanation-3: -The zygote travels through their fallopian tube to their uterus about three to five days after fertilization. The cell of the zygote continuously divides, eventually forming a hollow ball of cells called the blastocyst.

Detailed explanation-4: -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.

Detailed explanation-5: -Morula Formation: The morula appears approximately four days after fertilization and first appears as a 16-to 32-celled mass still surrounded by the zona pellucida.