Each human cell contains 23 pairs of chromosomes that carry DNA within their nucleus. The X and Y chromosomes, commonly referred to as the sex chromosomes, are one such pair. They determine the ...

The biological factory that produces reproductive cells has a robust quality control system to identify and eliminate eggs ...

Smaller nucleoli slow aging, acting as a "mortality timer," while larger nucleoli lead to cell death by destabilizing rDNA. The secret to cellular youth may lie in maintaining a small nucleolus—a ...

eLife is a non-profit organisation inspired by research funders and led by scientists. Our mission is to help scientists accelerate discovery by operating a platform for research communication that ...

Understanding how deletion mutations in mitochondrial DNA contribute to aging can help delay age-related decline in ...

Researchers' initial understanding of meiosis was based upon careful observations of chromosome behavior using light microscopes. Then, in the 1950s, electron microscopy provided scientists with a ...

In normal human cells, the nucleus contains 23 pairs of chromosomes that enclose the DNA. There are some natural processes that can damage DNA. For example, in chromothripsis, which occurs in some ...

These findings help us better understand the structure and function of our chromosomes ... body faces when packing its DNA into its tiny nucleus. To achieve this, nature employs ingenious ...

The theory of evolution, first articulated by Charles Darwin in the 19th century, has been the foundation of biological ...

In most animal, plant and fungal cells DNA is stored in the nucleus coiled up in thread-like structures called chromosomes. The nucleus of one of your skin cells contains about two metres of DNA ...

New research shows how SMC proteins make long loops in our DNA and also put twists into the loops as they form, helping to ...