Considering the answers;
1. Moved to the nucleus
2. Broken down and made into DNA molecules
3, Used to make specific protein molecules that form genes
4. Accurately replicated.
The correct answer is 4. Accurately replicated
The inherited instructions that a human cell carries must first be accurately replicated. During the replication process, the cell replicates its genetic material, that is the DNA molecules are replicated to prepare the cell for division which yields cells that will be passed to the offspring.
The limb buds appears in the in the fourth week of gestation and the
upper limb is visible on day 24. Initial elongation of the bud forms around 33
days and continues to elongate until seven weeks.