LIFE SCIENCE

Detailed explanation-1: -Each chromosome has a constriction point called the centromere, which divides the chromosome into two sections, or “arms.” The short arm of the chromosome is labeled the “p arm.” The long arm of the chromosome is labeled the “q arm.”

Detailed explanation-2: -Short arm designated as ‘p’ arm, p stands for petite/short and the long arm designated as ‘q’ arm. So, the correct answer is ‘p-arm and q-arm respectively’ Solve any question of Cell : The Unit of Life with:-Patterns of problems. >

Detailed explanation-3: -The symbol ‘p’ was chosen to represent the short arm because ‘p’ stands for ‘petit’, ‘small’ in French. The letter ‘q’ was selected to represent the long arm because ‘q’ is the next letter to ‘p’ in the English alphabet.

Detailed explanation-4: -Definition. Each human chromosome has a short arm ("p” for “petit") and long arm ("q” for “queue"), separated by a centromere. The ends of the chromosome are called telomeres. Each chromosome arm is divided into regions, or cytogenetic bands, that can be seen using a microscope and special stains.