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.
Chromosomes may be entangled, research finds

Chromosomes may be entangled, research finds

Study sheds new light on why autism is more common in boys

Study sheds new light on why autism is more common in boys

Research aims to raise awareness of higher rate of testicular cancer in patients with DS

Research aims to raise awareness of higher rate of testicular cancer in patients with DS

New study maps human genome to healthy tissue functions and disease processes

New study maps human genome to healthy tissue functions and disease processes

Researchers use mixed realty viewer to visualize complex biological networks in 3D

Researchers use mixed realty viewer to visualize complex biological networks in 3D

Abnormalities of blood vessels in the brain may play major role in development of schizophrenia

Abnormalities of blood vessels in the brain may play major role in development of schizophrenia

Whitehead Institute scientists identify brain/body connection in genomic region linked to autism

Whitehead Institute scientists identify brain/body connection in genomic region linked to autism

Change in epigenetic gene regulation by imprinting can trigger preeclampsia, study shows

Change in epigenetic gene regulation by imprinting can trigger preeclampsia, study shows

Research findings can lead to new treatment for patients with fatal glandular cancer

Research findings can lead to new treatment for patients with fatal glandular cancer

Pediatric researchers discover gene variants related to aggressive form of neuroblastoma

Pediatric researchers discover gene variants related to aggressive form of neuroblastoma

Researchers discover ‘recycled’ genes in mammalian genome

Researchers discover ‘recycled’ genes in mammalian genome

Lesser-known gene appears to play greater role in Alzheimer's and dementia-related memory decline

Lesser-known gene appears to play greater role in Alzheimer's and dementia-related memory decline

Genome sequence cannot predict radiation resistance, say researchers

Genome sequence cannot predict radiation resistance, say researchers

Researchers develop model to explore hard-to-study mutations in human genome

Researchers develop model to explore hard-to-study mutations in human genome

Penn researchers find abnormally shortened telomeres in young DMD patients’ muscle stem cells

Penn researchers find abnormally shortened telomeres in young DMD patients’ muscle stem cells

Researchers find correlation between shorter telomeres and presence of heart failure

Researchers find correlation between shorter telomeres and presence of heart failure

Split-brain study using fruit fly provides better understanding of autism

Split-brain study using fruit fly provides better understanding of autism

Japanese scientists uncover new genetic marker for schizophrenia

Japanese scientists uncover new genetic marker for schizophrenia

UAB researchers reveal key role for RSF1 protein in silencing genes

UAB researchers reveal key role for RSF1 protein in silencing genes

Human ancestors responsible for transmitting ancient strains of herpesvirus, study finds

Human ancestors responsible for transmitting ancient strains of herpesvirus, study finds