GENERAL HISTOLOGY

Detailed explanation-1: -Materials pass in and out of the nucleus through small openings, or pores, in the nuclear membrane. Floating in the nucleus are thin strands called chromatin, which contains the genetic material, or the instructions for cell functions. The nucleus also contains the nucleolus, a structure where ribosomes are made.

Detailed explanation-2: -Chromosomes, thin strands of heredity material that fill the nucleus, contains information for directing a cell’s functions.

Detailed explanation-3: -These long strands of coiled-up DNA and proteins are called chromosomes. Each chromosome contains many genes.

Detailed explanation-4: -Chromosomes and DNA Now that we have a sense of the structure of the nucleus, let’s have a closer look at the genetic information stored inside it: the DNA. Most of an organism’s DNA is organized into one or more chromosomes, each of which is a very long string or loop of DNA.

Detailed explanation-5: -Chromatin fibers are coiled and condensed to form chromosomes. Chromatin makes it possible for a number of cell processes to occur including DNA replication, transcription, DNA repair, genetic recombination, and cell division.