Where does meiosis occur in plants?

The first signs of cellular differentiation occur in the blastocyst. why is cellular differentiation important for the development of a fully formed human infant?

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?