Chromosome News and Research

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In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope. Most of what researchers know about chromosomes was learned by observing chromosomes during cell division.

Each chromosome has a constriction point called the centromere, which divides the chromosome into two sections, or “arms.” The short arm of the chromosome is labeled the “p arm.” The long arm of the chromosome is labeled the “q arm.” The location of the centromere on each chromosome gives the chromosome its characteristic shape, and can be used to help describe the location of specific genes.
Want a new type of man? Maybe less brawn and more brains?

Want a new type of man? Maybe less brawn and more brains?

Chromosome losses can signal an especially poor response to therapy

Chromosome losses can signal an especially poor response to therapy

Father's sperm packs more than just a fertilizer

Father's sperm packs more than just a fertilizer

New way by which cells can become cancerous may solve mystery with lung cancer

New way by which cells can become cancerous may solve mystery with lung cancer

Researchers find an entirely new way by which cells can become cancerous

Researchers find an entirely new way by which cells can become cancerous

Completion of the most gene-rich of all the human chromosomes

Completion of the most gene-rich of all the human chromosomes

Research uncovers critical pieces of human genome

Research uncovers critical pieces of human genome

Study sheds new light on children with a severe form of acute lymphoblastic leukemia

Study sheds new light on children with a severe form of acute lymphoblastic leukemia

Developing smart drugs

Developing smart drugs

Scientists have discovered a genetic cause of cleft lip and palate in mice

Scientists have discovered a genetic cause of cleft lip and palate in mice

Transplanted bone-marrow cells could regenerate nerve cells in the brain

Transplanted bone-marrow cells could regenerate nerve cells in the brain

Mystery surrounding ageing, death and cancer is dispelled by new study

Mystery surrounding ageing, death and cancer is dispelled by new study

Lou Gehrig’s disease gene discovered

Lou Gehrig’s disease gene discovered

Clinical trial of enzyme replacement therapy for the treatment of Gaucher disease

Clinical trial of enzyme replacement therapy for the treatment of Gaucher disease

Discovery shows how single genetic mutation can cause complex disorders

Discovery shows how single genetic mutation can cause complex disorders

New techniques to search the yeast genome for genes that help keep copied chromosomes together

New techniques to search the yeast genome for genes that help keep copied chromosomes together

CUMC and MIT researchers have cloned a mouse from its olfactory neurons

CUMC and MIT researchers have cloned a mouse from its olfactory neurons

Protein on the centrosome key to new strategies for stopping cancer growth

Protein on the centrosome key to new strategies for stopping cancer growth

New method that will revolutionize the search for genes

New method that will revolutionize the search for genes

New information on genetic shuffling before egg or sperm formation rewrites genetic theory

New information on genetic shuffling before egg or sperm formation rewrites genetic theory