Where sexes come by the thousands

By the end of every spring semester, students in my introductory biology course at Vanderbilt University have become quite familiar with natural variation in human sex chromosomes. They know, for example, that most females ...

Scientists map a complicated ballet performed in our cells

For years, scientists have looked at human chromosomes, and the DNA they carried, poring over the genetic code that makes up every cell for clues about everything from our eye color to congenital diseases. In a new study, ...

The highly complex sugarcane genome has finally been sequenced

Sugarcane was the last major cultivated plant to have its genome sequenced. This was because of its huge complexity: The genome comprises between 10 and 12 copies of each chromosome, while the human genome has just two. It ...

Researchers report findings about the control of cell division

Experts from the University of Seville and the Andalusian Centre for Molecular Biology and Regenerative Medicine (Cabimer) have published a new study on the mechanisms that regulate cell division and guarantee the correct ...

Synthesizing the human genome from scratch

For the past 15 years, synthetic biologists have been figuring out how to synthesize an organism's complete set of DNA, including all of its genes. They've tackled the genomes of microbes, but now one large consortium has ...

Scientists unlock secret of chromosome copier

University of Dundee scientists have solved a mystery concerning one of the most fundamental processes in cell biology, in a new discovery that they hope may help to tackle cancer one day.

How human eggs end up with the wrong number of chromosomes

One day before ovulation, human oocytes begin to divide into what will become mature eggs. Ideally, eggs are packaged with a complete set of 23 chromosomes, but the process is prone to error, especially with age. In a Review ...

Scientists delve into 'black box' of DNA research

Scientists at Florida State University, Baylor College of Medicine and the Broad Institute of Harvard and MIT have broken ground in a little-understood area of human genetics.

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