DNA is in an incredible structure. This tightly coiled molecule houses the genes that an organism needs to grow and survive, and packing them all inside a cell's nucleus is an incredible feat. The DNA length varies in different organisms. The DNA of a virus may be as small as a few thousand base pairs.
Consider the consequences. Delays and missed deadlines can be accepted as long as the value of the project exceeds the consequences of the delay. In all likelihood, delays will impact project costs, resource availability, customer relationships, and related business needs.
In some cases, your pediatrician might pick up a delay during an office visit. It will probably take several visits and possibly a referral to a developmental specialist to be sure that the delay is not just a temporary lag. Your child's doctor may use a set of screening tools during regular well-child visits.