A gene mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people.Mutations range in size; they can affect anywhere from a single DNA building block (base pair) to a large segment of a chromosome that includes multiple genes. gene mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people.
True labor contractions last more than 30 seconds at the onset and get progressively longer, up to 60 seconds, whereas false labor contractions vary in length and intensity.
Preterm contractions. Many contractions that occur after week 34 are random and irregular; these are known as Braxton-Hicks contractions. If contractions come regularly every 10 minutes or less rather than intermittently, you may be in preterm labor. Report any contractions to your doctor or midwife so she can determine what's happening.