What does a genome mean in biology ?
Genome refers to the genetic code that contains all the instructions in a living thing. Each genome contains all the information necessary for an organism to grow and develop.
Our body is made up of trillions of cells. Just like a recipe book, each cell contains the instructions that make up us.
These instructions are called the genome and consist of DNA molecule.
Every cell in the body, for example skin cell or liver cell, carries the same genetic information.
Information concerning growth, development and our health is contained in DNA in the form of its unique chemical code.
This genetic code is determined by the sequencing of 4 nucleotide bases called Adenine, Thymine, Cytosine and Guanine, which make up the DNA.
DNA has a coiled structure called a double-helix.
The DNA in the nucleus of the cell is wrapped and packaged in filamentous structures called chromosomes.
Certain parts of the long DNA molecule packaged in chromosomes form the genes that carry the information that make up proteins.
Genes control the formation of different characters, such as hair style, eye color.
Every living creature has its own unique genome.
Our genome is about 3.2 billion base pairs long and packaged into 23 pairs of chromosomes.
The genome size of every living thing is different.