In which phase of mitosis does chromatin condense and centrioles move to opposite ends, while the nuclear envelope breaks down and spindle fibers form?

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?

The process by which natural forces move weathered rock and soil brim one place to another is called

What should be the strand of complementary dna produced by the strand of dna shown below cgt ata