After replicated a DNA molecule with two strands three times, how many molecules of DNA are formed?
Is eight the correct answer?
They were originally radiolabeled and the end result will only have two radiolabeled strands. Is this Correct?
To determine the number of DNA molecules formed after replication, we need to consider the process of DNA replication.
DNA replication follows a semi-conservative model, meaning each replication results in two identical daughter strands, with each strand consisting of one original parental strand and one newly synthesized strand.
Let's break down the number of DNA molecules formed with each round of replication:
1. Initial DNA molecule: 1 molecule
2. After the first round of replication: 2 molecules (each with one parental and one newly synthesized strand)
3. After the second round of replication: 4 molecules (each of the two previous molecules replicates, resulting in four total molecules)
4. After the third round of replication: 8 molecules (each of the four previous molecules replicates, resulting in eight total molecules)
Therefore, the correct answer is eight molecules of DNA formed after replicating a DNA molecule with two strands three times. So, yes, eight is indeed the correct answer.