Answer:
After DNA replication, a DNA molecule consists of two identical copies, known as sister chromatids. Each sister chromatid contains one original strand of DNA (called the parental strand) and one newly synthesized strand of DNA (called the daughter strand). The process of DNA replication ensures that each daughter strand is complementary to its respective parental strand.
During DNA replication, the enzyme DNA polymerase adds new nucleotides to the growing daughter strands by following the base-pairing rules. For example, if the parental strand has an adenine (A), the DNA polymerase will add a thymine (T) to the daughter strand. Similarly, if the parental strand has a cytosine (C), the DNA polymerase will add a guanine (G) to the daughter strand, and vice versa.
Therefore, each DNA molecule after replication consists of:
1. Two sister chromatids, which are identical copies of each other.
2. Each sister chromatid contains one original parental strand and one newly synthesized daughter strand.
It's important to note that after DNA replication, the sister chromatids are held together at a region called the centromere. These sister chromatids will separate during cell division, with each daughter cell receiving one copy of the replicated DNA molecule.
Step-by-step explanation: