Cold sores are caused by a herpes virus. There are eight different kinds of human herpes viruses. Only two of these, herpes simplex types 1 and 2, can cause cold sores. It is commonly believed that herpes simplex virus type 1 infects above the waist and herpes simplex virus type 2 infects below the waist.
The DNA is tightly coiled many times around proteins called histones that support the chromosome structure. The bound DNA units are called nucleosomes. Different kinds of organisms have different numbers of chromosomes. Humans have 23 pairs of chromosomes, 46 in all: 44 autosomes and two sex chromosomes.Each parent contributes one chromosome to each pair, so children get half of their chromosomes from their mothers and half from their fathers.he bound DNA units are called nucleosomes. Different kinds of organisms have different numbers of chromosomes. Humans have 23 pairs of chromosomes, 46 in all: 44 autosomes and two sex chromosomes.
DNA stands for deoxyribonucleic acid. This is the chain of âlinksâ that determines how the different cells in your body will function. Each of these links is called a nucleotide. DNA basically contains two copies of 23 chromosomes each, one from the mother and one from the father of the person.Only some of these complex cells carry the âgenetic information for your genes. These are the parts that decide what you basically inherit from your parents.ach of these links is called a nucleotide. DNA basically contains two copies of 23 chromosomes each, one from the mother and one from the father of the person. Only some of these complex cells carry the âgenetic information for your genes.