in conservative DNA replication is both both daughter DNA newly formed
In conservative DNA replication, one of the daughter strands is newly formed, while the other is the parental DNA strand that was conserved or preserved from the original double-stranded DNA molecule.
In conservative DNA replication, only one of the daughter DNA molecules is newly formed, while the other remains intact. This occurs when the parental DNA strands separate, and each serves as a template for the synthesis of a new complementary strand. As a result, one daughter DNA molecule contains the original parental DNA strand, and the other contains the newly synthesized DNA strand.
In conservative DNA replication, both daughter DNA strands are newly formed.
To understand this process, let's first explain how DNA replication works. DNA replication is a complex biological process that occurs before a cell divides or a new organism is formed. It involves the copying of the entire DNA molecule to produce two identical DNA molecules, known as daughter strands. Each DNA molecule is made up of two complementary strands that are held together by specific base-pairing rules: adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).
Now, let's focus on conservative DNA replication. In this mechanism, the parental DNA molecule remains intact, and the two daughter strands are synthesized completely anew. The key steps involved in conservative DNA replication are as follows:
1. Initiation: The replication process begins at specific sites along the DNA molecule called origins of replication. Proteins called initiator proteins recognize these sites and initiate the separation of the two DNA strands.
2. Unwinding: Specialized proteins called helicases unwind the double helix structure by breaking the hydrogen bonds between the base pairs, resulting in the separation of the parental DNA strands.
3. Base Pairing: Once the DNA strands are separated, the enzyme DNA polymerase binds to each parental DNA strand and starts synthesizing new daughter strands. It does this by matching the complementary base pairs with the exposed parental DNA strands. For example, if the parental DNA strand has a sequence of ATCG, the newly synthesized daughter strand will have a complementary sequence of TAGC.
4. Elongation: As the DNA polymerase continues adding nucleotides to the new strands, it moves along the parental DNA molecule in opposite directions. This process occurs simultaneously on both parental DNA strands until the entire molecule is replicated.
5. Termination: Eventually, the DNA replication process reaches the end of the DNA molecule, and the polymerase enzymes and other associated proteins dissociate from the newly formed daughter strands.
In the case of conservative DNA replication, after the replication process is completed, the parental DNA molecule remains intact, and two new daughter strands are formed. These daughter strands are complementary to each other and identical to the parental DNA molecule before replication.
It's important to note that conservative DNA replication is not the most common mechanism observed in cells. The most prevalent method is known as semiconservative DNA replication, where each new DNA molecule consists of one newly synthesized strand and one parental strand.