how is the genome created how do they know where the genes a

how is the genome created how do they know where the genes are located on the circle representation?

Solution

the genome is the entire DNA content of a given cell. DNA is a fibrous chemical made of long strings of nucleotides which form the genes which code for the traits of the organism. Thus, the genome has come to be thought of as a \"blueprint\" or a \"book\" of life, in the sense that the genome is primarily responsible for the organism itself. Oversimplification of this idea has led to the notion that life is just the product of DNA, but as a creationist.

The human genome is composed of 22 linear pairs of chromosomes called autosomes, and 2 special chromosomes (X and Y) called sex chromosomes. Each chromosome is a single piece of DNA, and human chromosomes range in size from approximately 45 million to 279 million nucleotides.3 In terms of mass, the finished sequence of the smallest human autosome (Chromosome 21)4 is 53.5 million times bigger than a single sugar molecule (glucose). DNA nucleotides come in four varieties: adenine, cytosine, guanine, and thymine, and it is the sequence of these nucleotides that contain the information that make up our genes. The sequence may take the form of large-scale, tandemly repeated structures called heterochromatin, or the sequence may be largely unique, complex sequences called euchromatin. Heterochromatic regions are found in the centromeres (interior \"handles\") and telomeres (end caps) of chromosomes, and in special structures called knobs. Genes are mostly found in the euchromatic region of the genome. For technical reasons, heterochromatin is very difficult to sequence correctly, while euchromatin is relatively simple to sequence.