Answer:
Gastrulation.
Explanation:
The embryonic development occurs through the different developmental stages like cleavage, morula, blastula and so on. The formation of the germ layers occur in the gastrulation period.
The primitive streak is the structure that develops during the early stages of the gastrulation. As the embryo becomes asymmetric., the cells moves from their initial position and leads to the formation of primitive streak in the gastrulation phase.
Thus, the correct answer is option (C).
Answer:
Explanation:
The bone marrow produces stem cells, this is what makes your bodys blood cells – red cells, white cells and platelets. The erythropoietin sends a message to the stem cells telling more of them to develop into red blood cells, rather than white cells or platelets.
Answer:
Show the story
Explanation:
take a picture of the story
Give 30 gentle chest compressions at the rate of 100-120/minute.
Answer:
In 1820, a group of physicians concerned about the quality and consistency of medicines published the first United States Pharmacopeia (USP), which contained formulas for the preparation of 217 drugs considered to be the “most fully established and best understood” at the time.
Explanation:
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