Question

Arrange the stages of embryonic development in the correct order.

cell division in a zygote to form a morula
differentiation of cells in the blastocyst
egg fertilized to form a zygote
development of tissues
cell division to form a blastocyst
development of organs

Answer 1

Embryonic developments takes place in about 56 days. The correct arrangement of events is as follows:

1. egg fertilized to form a zygote
2. cell division in a zygote to form a morula
3. cell division to form a blastocyst
4. differentiation of cells in the blastocyst
5. development of tissues
6. development of organs

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Answer 2

The stages of embryonic development in the correct order;

1. egg fertilized to form a zygote

2. cell division in a zygote to form a morula

3. cell division to form a blastocyst

4. differentiation of cells in the blastocyst

5. development of tissues

6. development of organs

Embryonic development refers to the formation and development of the embryo and it involves the process of cellular division and differentiation. Embryonic development begins with the fertilization of the egg cell by a sperm cell to form a zygote (a single cell). The zygote divides through mitosis in a process known as cleavage to form morula which also divides to form a blastocyst. Differentiation of cells in the blastocyst occurs followed by the development of tissues and organs.