immune system refers to any a ability of the body to resist Invasion by a disease causing organisms
It moves around feeding on organic matters like bacteria and other micro particles
I believe that the Loose uncoiled chromosomes are actually DNA in the form of Chromatin. Genes are made up of chromosomes and direct the formation of a specific characteristic DNA and genes are the same thing. Chromosomes contain 100 to 100 of genes in one very long strand of DNA. The DNA is coiled around proteins that are called histones. The DNA seems to form a bigger part of the chromosome than the histone and since the DNA consists of genes, then half of the chromosomes is genes.
