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.

Genomic study reveals colonial and Indigenous contributions to modern South Africans

A genomic analysis of over 1,200 people from across South Africa reveals how colonial-era European, Indigenous Khoe-San peoples, and enslaved people contributed to the modern-day gene pool in South Africa.

23 Sep 2025

Adults with both Down Syndrome and congenital heart defects show remarkable resilience

Adults with both Down Syndrome and congenital heart defects, also known as congenital heart disease (CHD), are showing remarkable resilience despite facing significant medical challenges, according to a new MUSC study in Pediatric Cardiology.

19 Sep 2025

POT1 gene mutation linked to pulmonary fibrosis through telomere dysfunction

Idiopathic pulmonary fibrosis is a potentially fatal disease currently without treatment, in which lung tissue develops scarring and becomes stiff, making breathing increasingly difficult over time.

18 Sep 2025

Loss of key Y chromosome gene causes infertility in male mice

In a new study conducted at the University of Hawaiʻi at Mānoa, researchers from the John A. Burns School of Medicine (JABSOM) have shown that the loss of a key male fertility gene leads to infertility and changes expression of hundreds of other important genes.

17 Sep 2025

DoD awards $1.7 million grant to continue the Convergent Science Virtual Cancer Center

A University of Arizona Comprehensive Cancer Center researcher received a $1.7 million grant from the Department of Defense to continue the Convergent Science Virtual Cancer Center, which broadens the scope of education for cancer research trainees through an emergent, cross-disciplinary approach known as convergent science.

16 Sep 2025

Study identifies C1orf122 as prognostic marker in liver cancer

Primary liver cancer is the third leading cause of cancer-related deaths, of which hepatocellular carcinoma (HCC) accounts for approximately 90% of all liver cancer cases.

11 Sep 2025

Can cannabis use disrupt women’s fertility? New study finds strong evidence

Researchers found that THC, the psychoactive compound in cannabis, alters oocyte gene expression, spindle formation, and chromosome segregation, lowering embryo euploidy rates in IVF. This provides direct human evidence linking cannabis exposure to impaired female fertility outcomes.

10 Sep 2025

Researchers uncover a previously unknown mechanism behind chromosome end protection

Researchers have uncovered a previously unknown mechanism that safeguards the chromosome ends from being mistakenly repaired by the cell.

9 Sep 2025

Spaceflight accelerates aging of human blood stem cells

Researchers from University of California San Diego Sanford Stem Cell Institute have discovered that spaceflight accelerates the aging of human hematopoietic stem and progenitor cells (HSPCs), which are vital for blood and immune system health.

4 Sep 2025

Platelets found to mop up DNA fragments and improve early cancer detection

Platelets are probably best known for their role in blood clotting, making scabs and related, if less salubrious, contributions to heart attacks and strokes.

2 Sep 2025

Genomic clues uncover early origins of multiple myeloma

A new study maps out the timeline of DNA damage for multiple myeloma, the second most common blood cancer.

1 Sep 2025

Insights into clinical features and genetic variants of Cornelia de Lange syndrome in China

Cornelia de Lange syndrome (CdLS) is a rare genetic disorder with symptoms, including facial anomalies (such as fused eyebrows, short nose, upturned nose tip, and downturned mouth corners), growth retardation, small head (microcephaly), developmental delays, cognitive impairments, excess hair growth, and limb anomalies.

29 Aug 2025

Next-gen sequencing reveals the regulatory potential of the non-coding genome

The non-coding genome, once dismissed as "junk DNA", is now recognized as a fundamental regulator of gene expression and a key player in understanding complex diseases. Following the landmark achievements of the Human Genome Project (HGP), scientists have increasingly focused on deciphering the non-coding regions of the human genome, which comprise approximately 98% of the genetic material.

23 Aug 2025

Study reveals genome rewiring mechanism driving mantle cell lymphoma

Translocations are chromosomal "cut and paste" errors that drive many lymphomas, a type of blood cancer and the sixth most common form of cancer overall.

21 Aug 2025

How cohesin mechanics and nanotracker tech are redefining DNA research

Discover how cohesin mechanics and nanotracker technology are transforming DNA research in this Bruker webinar.

From Bruker Nano Surfaces and Metrology 19 Aug 2025

Researchers uncover a novel way platelets can suppress inflammation

Platelets are probably best known for their role in blood clotting, making scabs and related, if less salubrious, contributions to heart attacks and strokes. But these tiny, saucer-shaped blood cells have other physiological duties as well, including surveillance for viral or bacterial infections, the recruitment of immune cells to the site of a suspected incursion, and even the direct destruction of pathogens.

18 Aug 2025

Origin-recognition complex plays a broad role in the regulation of gene expression

Origin-recognition complex, or ORC, plays an unexpectedly broad role in the regulation of human cell gene expression, according to a study in the journal Cell Reports.

14 Aug 2025

Understanding sex-based differences in immune system function

Many diseases affect men and women differently. Asthma tends to strike men earlier in life, yet more women develop asthma as they get older.

7 Aug 2025

Researchers uncover dozens of traits driven by maternal versus paternal genes

Researchers developed a high-accuracy method to infer whether genetic variants come from the mother or father without needing parental genomes, analysing 286,666 UK Biobank participants. They uncovered over 30 parent-of-origin effects on traits from growth and metabolism to diabetes, many showing opposite effects depending on parental source.

7 Aug 2025

Scientists map the genes behind diet and dementia risk

Researchers established a high-quality genetic dataset from the MIND diet trial, enabling new studies of gene–diet interactions in cognitive health. This resource allows deeper investigation into why individuals respond differently to dietary interventions targeting dementia risk.

6 Aug 2025