Cells of the inner cell mass in an early mammalian embryo can be isolated and grown in culture. Which of the following is NOT true regarding these cells?
A) They are totipotent.
B) They can be introduced into another developing embryo where their progeny become incorporated into the resulting adult animal, even into its germ line.
C) They are stem cells.
D) They can be manipulated in culture to give rise to almost any type of differentiated cell.

Question

Quizplus · Accepted Answer

Embryonic stem cells (ES cells) are not totipotent; they are pluripotent. This limitation is only minor, and requires that they are injected into preformed early embryos, as opposed to being directly implanted.

Cells of the Inner Cell Mass in an Early Mammalian