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.
Researchers use high-quality coral genome to forecast potential bleaching events

Researchers use high-quality coral genome to forecast potential bleaching events

RNA editing repair technique shows promise for treating neurological disorders

RNA editing repair technique shows promise for treating neurological disorders

Supergenes may have a massive role in evolutionary adaption

Supergenes may have a massive role in evolutionary adaption

Protein PRC1 acts as a 'viscous glue' during cell division, research shows

Protein PRC1 acts as a 'viscous glue' during cell division, research shows

Glitches in DNA replication can lead to genetic diseases

Glitches in DNA replication can lead to genetic diseases

Researchers identify osmotic stress as stimulator of cellular waste disposal

Researchers identify osmotic stress as stimulator of cellular waste disposal

Researchers identify novel protein complex that regulates chromosome segregation

Researchers identify novel protein complex that regulates chromosome segregation

A metabolic enzyme could be a potential drug target for B cell lymphomas

A metabolic enzyme could be a potential drug target for B cell lymphomas

New mechanism shows promise for treating certain congenital disorders

New mechanism shows promise for treating certain congenital disorders

Study reveals the relationship between genome folding and cellular functions

Study reveals the relationship between genome folding and cellular functions

Study investigates how cancer adapts its metabolism to overcome treatment

Study investigates how cancer adapts its metabolism to overcome treatment

Genome rewiring could help explain evolution of multi-cellular organisms

Genome rewiring could help explain evolution of multi-cellular organisms

New image of LSD1 enzyme in action could provide insight into gene regulation

New image of LSD1 enzyme in action could provide insight into gene regulation

Review reveals exceptions to the purported rules of sex chromosome evolution theory

Review reveals exceptions to the purported rules of sex chromosome evolution theory

Researchers unravel mechanisms behind organ-specific elimination of chromosomes in plants

Researchers unravel mechanisms behind organ-specific elimination of chromosomes in plants

Study sheds light on the complexity of HIV-1 nuclear entry

Study sheds light on the complexity of HIV-1 nuclear entry

Recombineering technique may overcome barriers in bacterial engineering

Recombineering technique may overcome barriers in bacterial engineering

New insights into recombination of sex chromosomes during meiosis

New insights into recombination of sex chromosomes during meiosis

Using CRISPR/Cas molecular scissors to recombine entire chromosomes

Using CRISPR/Cas molecular scissors to recombine entire chromosomes

New sequencing method helps map the spatial arrangement of DNA

New sequencing method helps map the spatial arrangement of DNA