Question

which order of events is correct?
o mitosis → cell differentiation → stem cells
o stem cells → zygote → cell differentiation
o zygote → cell differentiation → mitosis
o zygote → stem cells → cell differentiation

Explanation:

A zygote is the first - cell formed by the fusion of gametes. Stem cells are undifferentiated cells that can develop from a zygote. Cell differentiation is the process by which stem cells become specialized cells. Mitosis is a cell - division process that occurs throughout development but is not the first step in this sequence.

Answer:

zygote → stem cells → cell differentiation