Question

There are many developmental stages that a human undergoes between fertilization and birth. Immediately following which stage does
cellular differentiation begin?

Answer 1

Answer:

W

Explanation:

Because when the sale starts invited it starts out as a singular cell, then divide itself into two and it continues to divide itself. So the answer that would make the most sense would be W because it starts out with only two.

Answer 2

Answer:

The answer is X

Explanation:

When the blastula changes into the gastrula (X), three layers form:

an outer layer, known as the ectoderm,

an inner layer, known as the endoderm, and

a middle layer, known as the mesoderm.

These layers then differentiate into a human's tissues and organs.

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