Chick Embryo Development. A chick emerges from a fertile egg after twenty-one days of incubation. 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
Explanation:
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GinnyPotter00
twenty days After twenty days, the chick is in the hatching position, the beak has pierced the air cell, and pulmonary respiration has begun. After 21 days of incubation, the chick finally begins its escape from the shell. The chick begins by pushing its beak through the air cell.
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Answer:
incubation
Chick Embryo Development. A chick emerges from a fertile egg after twenty-one days of incubation. 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
Explanation:
Pa brainliest
After twenty days, the chick is in the hatching position, the beak has pierced the air cell, and pulmonary respiration has begun. After 21 days of incubation, the chick finally begins its escape from the shell. The chick begins by pushing its beak through the air cell.