37. Short answer question XXII

 

 is a tangled mass of threadlike structures found inside the nucleoplasm. These are entirely made of DNA, which is packed with histone proteins. The tangled mass of chromatin condenses into rod-like bodies known as  when a cell begins to divide. Stretches of DNA on the chromosomes carry information for the synthesis of proteins. One duplicated chromosome, known as a chromatid, is typically connected to the other copy by a .