Question

mention two steps involved in embryogenesis​

Answer 1

Answer:

Human embryogenesis is a complex process that occurs during the first eight weeks after fertilization. The stages of embryogenesis are described in more detail below.

Stage 1: The process of embryogenesis begins with an egg or ovum being fertilized by a sperm cell to form a zygote. The zygote is surrounded by a strong membrane made up of glycoproteins, which the sperm has managed to penetrate. The zygote is formed 24 hours after the egg and sperm nuclei fuse. The zygote is a single diploid cell.

Stage 2: Over the next three days, the zygote undergoes a number of cell divisions, a process referred to as cleavage. Once the embryo has reached the 8-cell stage, it undergoes another process called compactation, which involves the tight binding of the cells to create a compact sphere. After compactation, the embryo is made up of 16 cells, which is referred to as the morula.