All cells contain the same genetic information. Why can't cells other than stem cells differentiate into various tissues? A)Stem cells are the only cells that can be implanted.
B)As cells develop their genetic sequence changes.
C)As cells develop some genes are turned off permanently.
D)Only stem cells have the genes for differentiation.
E)Stem cells are the only cells that do not have an X or Y chromosome and can therefore go into either a male or female.

Which of the following can be reduced by the use of renewable energy sources? a. social costs b. economic costs c. environmental costs d. all of the above select the best answer from the choices provided a b c d

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

Astudent completed a lab report. which correctly describes the difference between the “question” and “hypothesis” sections of her report? “question” states what she is asking, and “hypothesis” states the result of her experiment. “question” states what she is asking, and “hypothesis” states what she thinks the answer to that question is in “if . . then . . because” format. “question” describes what she is trying to find out, and "hypothesis" states the procedures and methods of data collection. “question” describes what she is trying to find out, and “hypothesis” states any additional information or prior knowledge about the question.