Question

explain embryos development in Hen ?​

Answer 1

At first, all the cells are alike, but as the embryo develops, cell differences are observed. ... Some cells may become vital organs; others become a wing or leg. Soon after incubation begins, a pointed thickened layer of cells becomes visible in the caudal or tail end of the embryo.

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Answer 2

A chick emerges from a fertile egg after twenty-one days of incubation. Where Chick Life Begins. The germinal disc is visible on the surface of the yolk. The development of the chick begins in the single cell formed by the union of two parental cells, egg and sperm, in the process known as fertilization.