Chromosome 3 News and Research

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Humans normally have 46 chromosomes in each cell, divided into 23 pairs. Two copies of chromosome 3, one copy inherited from each parent, form one of the pairs. Chromosome 3 spans almost 200 million base pairs (the building blocks of DNA) and represents approximately 6.5 percent of the total DNA in cells.

Identifying genes on each chromosome is an active area of genetic research. Because researchers use different approaches to predict the number of genes on each chromosome, the estimated number of genes varies. Chromosome 3 likely contains between 1,100 and 1,500 genes.

Genes on chromosome 3 are among the estimated 20,000 to 25,000 total genes in the human genome.

Further Reading

New screening technique to look for genes that change patients' responses to cancer drugs and other medications

New screening technique to look for genes that change patients' responses to cancer drugs and other medications

Twin research reveals gene that may play a crucial part in the development of myopia

Twin research reveals gene that may play a crucial part in the development of myopia

Further evidence about how estrogen helps activate breast cancer

Further evidence about how estrogen helps activate breast cancer

Possible inherited component for lung cancer

Possible inherited component for lung cancer

Gene responsible for infertility

Gene responsible for infertility

U.S. scientists have found the genetic basis for one form of sudden infant death syndrome

U.S. scientists have found the genetic basis for one form of sudden infant death syndrome

DNA left overs, new mechanism for evolution

DNA left overs, new mechanism for evolution

Ghrelin may help reduce obsesity in children with genetic disorder

Ghrelin may help reduce obsesity in children with genetic disorder

Geographic variations in colour perception

Geographic variations in colour perception

How DNA repair machinery detects and corrects errors in DNA replication

How DNA repair machinery detects and corrects errors in DNA replication

Chromosomal chaos in early embryonic development is linked to abnormalities in cytokinesis and spindle formation

Chromosomal chaos in early embryonic development is linked to abnormalities in cytokinesis and spindle formation

A moderately high protein diet could reduce a woman’s chances of becoming pregnant

A moderately high protein diet could reduce a woman’s chances of becoming pregnant

Discovery of gene that causes a rare juvenile-onset form of amyotrophic lateral sclerosis (ALS)

Discovery of gene that causes a rare juvenile-onset form of amyotrophic lateral sclerosis (ALS)

Catalogue of the 30,000 or so genes that contain the instructions to make a human or a mouse

Catalogue of the 30,000 or so genes that contain the instructions to make a human or a mouse

New gene found in genetic wasteland

New gene found in genetic wasteland

Geneticists determine the lack of chromosomes

Geneticists determine the lack of chromosomes

Significance of the discovery of anthrax toxin genes in a naturally occurring microbe other than Bacillus anthracis

Significance of the discovery of anthrax toxin genes in a naturally occurring microbe other than Bacillus anthracis

Breakthrough in gene therapy

Breakthrough in gene therapy

How we pass our genes to our children

How we pass our genes to our children

Evidence that abnormally short telomeres play a role in the early development of cancer

Evidence that abnormally short telomeres play a role in the early development of cancer