Which sentence lists events in the cell cycle in correct order, from earlier to later?

The chromosomes become longer and thinner; spindle fibers attach to the centromeres.

The nuclear membrane reforms; the chromosomes align in the middle of the cell.

The chromosomes replicate; the nuclear membrane dissolves.

The sister chromatids are separated; the chromosomes condense.

Which term below describes a piece of DNA that provides a set of instructions to a cell to make a specific protein?

gene

chromosome

trait

homologous chromosome