Question

As an embryo develops, identical cells give rise to specialized cells that perform different functions.What statement best describes the role of RNA in the differentiation of a specialized cell?A. RNA synthesizes new genes, and then it transcribes and translates these new genes into proteins specific to the cell.B. Certain genes in the cell are transcribed into RNA molecules, which are then translated into proteins specific to the cell.C. All genes in the cell are transcribed into RNA molecules, but only some of these molecules are translated into proteins.D. RNA deletes regions of the DNA that are unnecessary to the cell, and then it uses the remaining DNA to make proteins.

Answer 1

As an embryo develops, the reason for those identical cells to specialize in different cells that perform different functions is due to the gene expression, performed by the information RNA transcribes from DNA and the subsequent formation of proteins, but not all the genes are transcribed to all the kinds of cells, and, as stated in the B option, only certain genes in the cell are transcribed into RNA molecules, which are then used to form amino acids for proteins. So the answer is the B option.