Question

Trace the sequence of events that lead to development of a chick from the fertilised egg of a hen

Answer 1

Embryonic development in the egg has occurred as well as usually stops until proper cell environmental conditions. It mainly established for incubation to resume and all the cells are alike.

As the embryo develops with cell differences mainly observed. Cells become the vital organs with others become a wing or leg. Incubation begins as pointed thickened layer of cells are visible to caudal or tail end of embryo.

Answer 2

Explanation:

In hen fertilization is internal and the development of their young ones take place outside of the body of female.After fertilization zygote is started dividing and moves where a number of protective layer get from around it the egg shell is one of these layer the egg cell is made up of calcite.The embryo develop inside the egg in 21 days this is incubation period of egg. During this period specified temperature is provided by the hen by sitting on the eggs finally the cell breaks down and chicks come out .

Thanks,

I think it will helpe you