Question

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

Explanation:

• Option A: Gene activity is mainly regulated by processes like transcription factors, not DNA replication.
• Option B: Gametes get unique genes through processes like meiosis (crossing - over and independent assortment), not just DNA replication. DNA replication in gamete - forming cells (meiosis - related) is more about making copies for cell division, but the uniqueness comes from other meiotic events.
• Option C: DNA replication itself does not remove harmful traits. Mutations can occur during replication, and natural selection acts on traits over generations to potentially reduce the prevalence of harmful traits in a population.
• Option D: DNA replication is crucial for cell division (both mitosis and meiosis). In sexual reproduction (involving meiosis - related cell divisions for gamete formation) and asexual reproduction (involving mitosis - like cell divisions in some organisms), DNA replication ensures that the genetic material (which carries traits) is passed from the parent cell (or organism in asexual cases) to the daughter cells (or offspring in sexual cases).

Answer:

D. DNA replication passes on traits from parents to offspring