what is the importance of DNA copying in reproduction?
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Answer:
DNA determines the body design of an individual. The DNA that gets transferred from parents to offsprings makes them look similar. DNA copying is important for reproduction. Additional copies of DNA are made during replication which is necessary for the new cells formed after cell division.
DNA replication as a precursor to syngamy is of utmost importance due to the following reasons :
Essentially variations are triggered by meiosis and DNA replication,
- Variations in a particular individual determine a wide variety of factors like species continuity and species diversity on a population level
- They also determine ecological niche, ecological footprint and adaptive capacity on an individual level.
Consider this case of extinction of dinosaurs which were well adapted to cold climates, supposedly a meteor shower wiped out dinosaurs from the face of Earth, though not proved, this theory still is quite good on paper. Inability to adapt to warmer climates led to their extinction. One might say, modern day hens are related to dinosaurs. Some dinosaurs which were able to escape the wrath of nature slowly adapted with respect to the changing climate.
Ensures equal amounts of distribution of genetic material to both the offsprings.
- Karyokinesis followed by Cytokinesis ensures that both the daughter cells recieve equal amounts of genetic material, such a division is called "Equational Division" for same reasons. (As seen in Binary Fission)
Helps in repairing and replacing old cells.