NEET BIOLOGY

Detailed explanation-1: -During every cell division, a cell must duplicate its chromosomal DNA through a process called DNA replication. The duplicated DNA is then segregated into two “daughter” cells that inherit the same genetic information. This process is called chromosome segregation.

Detailed explanation-2: -DNA replication is the process by which the genome’s DNA is copied in cells. Before a cell divides, it must first copy (or replicate) its entire genome so that each resulting daughter cell ends up with its own complete genome.

Detailed explanation-3: -DNA replication must occur before mitosis can occur. Mitosis is the process of cell division, which creates two identical daughter cells from one parent cell. Since DNA serves as the genetic material in cells, it has to be replicated before the parent cell divides so that each daughter cell gets an identical copy.

Detailed explanation-4: -Mitosis is the process of nuclear division, which occurs just prior to cell division, or cytokinesis. During this multistep process, cell chromosomes condense and the spindle assembles.

Detailed explanation-5: -Before a cell divides, the strands of DNA in the nucleus must be copied, checked for errors and then packaged into neat finger-like structures. The cell division stages encompass a complicated process that involves many changes inside the cell.