Chromosome News and Research

RSS
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.
MIT biologists identify how the immune system eliminates genetically imbalanced cells

MIT biologists identify how the immune system eliminates genetically imbalanced cells

Penn/CHOP research helps to better understand cause of pediatric and treatment-related leukemias

Penn/CHOP research helps to better understand cause of pediatric and treatment-related leukemias

Impairment of specific gene increases susceptibility to opioid addiction and binge eating, study shows

Impairment of specific gene increases susceptibility to opioid addiction and binge eating, study shows

Anorexia nervosa linked to genetic anomalies on chromosome 12

Anorexia nervosa linked to genetic anomalies on chromosome 12

New cancer drug shows promise to treat leukemia in mouse models

New cancer drug shows promise to treat leukemia in mouse models

Study finds evidence that genes influence empathy

Study finds evidence that genes influence empathy

Researchers uncover protective mechanism of rotifers that may have implications for aging research

Researchers uncover protective mechanism of rotifers that may have implications for aging research

Researchers find new way to block type 1 diabetes

Researchers find new way to block type 1 diabetes

Phase 2 clinical study examines Alzheimer's disease drug to treat adults with Down syndrome

Phase 2 clinical study examines Alzheimer's disease drug to treat adults with Down syndrome

Collaborative effort to develop rare disease patient registries

Collaborative effort to develop rare disease patient registries

Innate genetic advantage contributes to better outcomes in newborn infant girls than boys, research shows

Innate genetic advantage contributes to better outcomes in newborn infant girls than boys, research shows

Scientists identify key gene in 22q11.2 that contributes to genitourinary birth defects

Scientists identify key gene in 22q11.2 that contributes to genitourinary birth defects

UCLA study characterizes brain differences between people with genetic risk for schizophrenia, autism

UCLA study characterizes brain differences between people with genetic risk for schizophrenia, autism

Research findings may provide answers for infertility in older women

Research findings may provide answers for infertility in older women

Sperm epigenetics and fertility

Sperm epigenetics and fertility

Weekly doses of steroids help hasten recovery in muscle injuries

Weekly doses of steroids help hasten recovery in muscle injuries

Study identifies first genetic locus for anorexia nervosa

Study identifies first genetic locus for anorexia nervosa

New technology could hold key to predicting outcome of blood cancer patients

New technology could hold key to predicting outcome of blood cancer patients

Study sheds light on neural mechanisms of Fragile X syndrome

Study sheds light on neural mechanisms of Fragile X syndrome

Discovery of protein that causes liver disease brings hope for new treatments

Discovery of protein that causes liver disease brings hope for new treatments