Process
Transcription
Copying the DNA sequence of a gene into RNA.
Nucleus
Stores most of the cell's DNA and controls which genes are used.Source: NHGRISource: Alberts et al., 2002Source: Cooper, 2000
Structure
How Nucleus connects
Nucleus is the site of
Nucleus is part of
Level of life
Cell
The smallest unit that can live on its own. Every living thing is made of one or more cells.
Nucleus contains
Structure
Chromosome
A single DNA molecule packaged with proteins. Human cells usually carry 23 pairs, 46 chromosomes in all.
Nucleus is used by
Technology or method
Cloning
Producing a genetically identical copy. Dolly the sheep, reported in 1997, was cloned from an adult cell.
Studied in
Your progress
Sources & further reading
The explanations on this page are our own summaries of these sources. Follow a link to read the original; if anything here disagrees with it, the original wins. How we choose and check sources.
Nucleus (opens the original in a new tab)
National Human Genome Research Institute. Talking Glossary of Genomic and Genetic Terms. National Human Genome Research Institute, NIH.
ReferenceGovernment sourceEducationalMolecular Biology of the Cell (4th edition) (opens the original in a new tab)
Alberts B, Johnson A, Lewis J, et al. (2002). Garland Science.
Free to read on NCBI Bookshelf. Standard reference for cell structure and molecular biology.
TextbookEducationalThe Cell: A Molecular Approach (2nd edition) (opens the original in a new tab)
Cooper GM (2000). Sinauer Associates.
Free to read on NCBI Bookshelf.
TextbookEducational