The reasons why DNA is called the container and carrier of heredity are:
1. DNA acts as a transmitter of biological signals in organisms.
2. DNA causes accurate replication during cell division.
3. DNA transfers the characteristics of parents to offspring.
4. It synthesizes proteins and RNA specific to the cell.
5. It changes the structure of organisms through mutation.
6. DNA is the master molecule of organisms.
7. During meiosis cell division, parental DNA moves directly into the germ cell.
8. It causes variation, mutation and evolution.
9. DNA is species specific and immutable. DNA molecules are changed only through mutation.
10. A change in the DNA molecule through mutation is passed on to the next generation.
From the above significant discussion, it can be said that DNA is the container and carrier of the heredity of living organisms.