A researcher isolates stem cells from a developing embryo and finds that they are able to differentiate only into bone cells or red blood cells. The isolated stem cells are likely from the:
A)morula.
B)gastrula.
C)ectoderm.
D)mesoderm.
E)endoderm.

Question

Quizplus · Accepted Answer

Stem cells that are able to differentiate into bone cells or red blood cells are likely derived from the mesoderm layer of the developing embryo, which gives rise to these cell types. The morula is an early stage of development before differentiation has occurred, while the gastrula is the stage at which the three germ layers (ectoderm, mesoderm, and endoderm) have formed. The ectoderm and endoderm give rise to different cell types than bone and blood cells, making them less likely sources for these stem cells.

A Researcher Isolates Stem Cells from a Developing Embryo and Finds