Arrangement of chromosomes in the order of decreasing length is termed
Pedigree
Eugenetics
Idiogram
Dysengenics
Genetic codes are
Polytene or giant chromosomes are found in
Chromosomes of all races of human are
Pribnow box is a consensus of $. .. . ...$ bases, forming a binding site for $E.$ coli $RNA$ polymerase at promotor
The chemical knives of $DNA$ are