What information can not be obtained from the sequence of a gene?

Ablastocyst is a group of cells that forms after a human egg is fertilized. the blastocyst consists of two types of cells. some of these cells will become the placenta. what do the other cells develop into?

Polar zones are cold and tend to be dry because of a pressure system of cold. low high

In two sentences explain the differences of neutrophil and macrophage