Question

1. think and discuss: why is it important that the cells dna is duplicated before cell division?

Explanation:

During cell division (e.g., mitosis or meiosis), a parent cell divides into daughter cells. DNA contains the genetic instructions (genes) for the cell's structure, function, and development. If DNA isn't duplicated before division, each daughter cell would receive only half (or an incomplete set) of the genetic material. This would lead to genetic information loss, and the daughter cells wouldn't have the full set of instructions needed to function properly, grow, or carry out essential life processes. Duplicating DNA ensures that each new daughter cell gets an identical (or complete, in the case of meiosis with subsequent modifications) copy of the genetic material, maintaining genetic continuity and allowing the cell to pass on all necessary genetic information.

Answer:

It is important that a cell’s DNA is duplicated before cell division because DNA contains the cell’s genetic information (genes) that direct its structure, function, and development. When a cell divides (e.g., in mitosis or meiosis), the duplicated DNA ensures that each resulting daughter cell receives a complete, identical copy of the genetic material. Without duplication, daughter cells would inherit an incomplete set of genetic instructions, which would disrupt their ability to function, grow, or carry out essential life processes (e.g., protein synthesis, metabolism, or responding to the environment). DNA duplication preserves genetic continuity, allowing cells to pass on all necessary genetic information to new cells.