A cell copies all of its DNA, gears up to split in two, and then just… doesn’t. It sits there, swollen with a double genome, ...

Scientists have uncovered a surprising twist in how cells behave when division goes wrong. Sometimes a cell successfully copies its DNA but fails to split into two, leaving it with double the genetic ...

Down syndrome is a condition in which a person has a fully or partially duplicated copy of chromosome 21. (A chromosome is a structure made up of DNA and proteins found in the nucleus of each cell.) ...

Genome duplication probably gave biodiversity a decisive evolutionary boost. A Chinese-German research team led by Axel Meyer from the University of Konstanz has now investigated the early phases of ...

Decades ago, researchers showed that Down syndrome (also known as trisomy 21), was caused when individuals carried an extra copy of chromosome 21. Down syndrome is also the most common genetic cause ...

Research on understanding the effect of extra chromosomes for conditions like Down syndrome typically involves examining what genes play a role in the symptoms of these conditions. However, ...

For a living cell to divide successfully, each daughter cell must inherit the correct genetic material. In eukaryotes, segregation of duplicated chromosomes is performed by the mitotic spindle, a ...

Get ready for a biology lesson. Certain plants have extra sets of chromosomes. And it turns out, it's a useful trait for a ...

One chromosome from the mother, one chromosome from the father: For us humans and the vast majority of animal species, having a double set of chromosomes is the standard. Two complete sets of ...