Stem Cells
100

 Immediately after fertilization, the zygote and early morula possess this level of potency.

What is totipotent?

200

When a stem cell differentiates, it follows one of three pathways, such as this one, where it can become a neuron or skin cell.

What is the ectoderm line?

300

This procedure can be used to “clone” organisms by transplanting the nuclei of differentiated cells into existing egg cells.

What is somatic cell nuclear transfer?

400

Embryonic stem cells are collected during this stage of the embryo’s development.

What is the blastocyst?

500

 Embryonic stem cells are able to differentiate into every type of cell in the body — all cells from the ectoderm, mesoderm, and endoderm — and are also known as this.

What is pluripotent?

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