Essentially, the airplane undergoes an annual inspection in pieces, in 25-, 50-, or 100-hour segments. The idea is that, say, control cables need not be inspected at every stop but should be seen once a year.
Deoxyribonucleic acid (/diËÉksiËraÉªbÉµ.njuËËkleÉª.É¨k ËaesÉªd/ ; ËÃ¦SÉªD) dna is a molecule that carries most of the genetic instructions used in the, development functioning and reproduction of all known living organisms and many. virusesell division is essential for an organism to grow, but, when a cell divides, it must replicate the DNA in its genome so that the two daughter cells have the same genetic information as their parent. The double-stranded structure of DNA provides a simple mechanism for DNA replication.
mtDNA for Genealogy. 1  Both Males and Females can take this test. 2  Females carry a specific DNA material that is useful in genealogy called the mitochondria, or mtDNA. This is the material that surrounds the chromosomes. 3  The mtDNA is passed from a mother to her children, essentially unchanged.