Question

what is the importance of dna replication to all living organisms?
a. dna replication determines which genes are active.
b. dna replication removes harmful traits from an organism.
c. dna replication ensures that gametes have unique genes.
d. dna replication passes on traits from parents to offspring.

Explanation:

To determine the importance of DNA replication, we analyze each option:

• Option A: DNA replication does not determine which genes are active (gene expression/regulation does that), so A is incorrect.
• Option B: DNA replication does not remove harmful traits (mutations or natural selection/other mechanisms deal with harmful traits), so B is incorrect.
• Option C: DNA replication in gametes (meiosis - related replication and division) is not about making unique genes (gametes get half the genetic material, and uniqueness comes from recombination, not replication). So C is incorrect.
• Option D: DNA replication occurs during cell division (including in the cells that give rise to gametes and in somatic cells for growth/repair). In the context of inheritance, when cells divide to form gametes (or in asexual reproduction, parent to offspring cells), DNA replication ensures that the genetic information (traits) is passed from parents (or parent cells) to offspring (or daughter cells). So D correctly describes the importance of DNA replication for passing traits to offspring.

Answer:

D. DNA replication passes on traits from parents to offspring.