Chromosome 1
Chromosome 1
Chromosome 1 is the designation for the largest human chromosome. Humans normally have two copies of this chromosome. Chromosome 1 spans about 249 million nucleotide bases and represents approximately 8% of the total DNA in cells.
Pronunciation
- Chromosome: /ˈkroʊməˌsoʊm/
- One: /wʌn/
Etymology
The term "chromosome" comes from the Greek words for color (chroma) and body (soma). This is due to the fact that chromosomes take up colored dyes. The number "1" is from the Old English 'an', which comes from the Proto-Germanic 'ainaz'.
Related Terms
- Gene: A distinct sequence of nucleotides forming part of a chromosome, the order of which determines the order of monomers in a polypeptide or nucleic acid molecule which a cell (or virus) may synthesize.
- DNA: A molecule composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses.
- Nucleotide: Organic molecules that serve as the monomers, or subunits, of nucleic acids like DNA and RNA.
- Cell: The basic structural, functional, and biological unit of all known organisms.
Categories
External links
- Medical encyclopedia article on Chromosome 1
- Wikipedia's article - Chromosome 1
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