Abundant in the swamps and marshes across south Louisiana, crawfish were a favorite food of early residents. Centuries later, crawfish season in Louisiana is still exciting, with crawfish boils and backyard parties a time-honored tradition. Commercial sales of crawfish in Louisiana began in the late 1800s.
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. viruseshe two DNA strands are known as polynucleotides since they are composed of simpler units called nucleotides. Each nucleotide is composed of a nitrogen-containing nucleobase âeither cytosine (C), guanine (G), adenine (A), or thymine (T)âas well as a monosaccharide sugar called deoxyribose and a phosphate group.
The structure of DNA DNA forms chromosomes Humans have 46 chromosomes This basic structure of DNA is the same among all organisms, which means the only real difference between our DNA and the DNA of a banana, giraffe, or goldfish is the particular order in which the four nucleotides are arranged.NA contains the genetic instructions that specify the traits of an organism. In our cells, DNA is found in the nucleus where it is organized into structures called chromosomes. All humans have 23 pairs of chromosomes. One set of chromosomes comes from Mom and one set comes from Dad, for a total of 46 chromosomes.