Human cells have two copies of each chromosome, and this balance is essential for genes to be expressed in the appropriate ...

Genomic analysis of three Neanderthals shows unusually high modern human DNA on the X chromosome offering clues about ...

For sexual reproduction to yield healthy offspring, newly generated oocytes—immature egg cells—must receive the correct amount of DNA after cell division. This process of segregating chromosomes ...

Researchers created artificial kinetochore structures that reduce chromosome separation errors during meiosis in aging egg cells. By lowering microtubule pulling force, the approach helped maintain ...

On the flipside, if telomeres are too long, it can also spell trouble because cancer cells require long telomeres to become longer lived, ‘immortal,’” says Mia Levine, associate professor of biology ...

When closely related species mate, their offspring sometimes survive but cannot reproduce. This pattern often affects males ...

The Iñupiat people of Alaska have long said that bowhead whales live two human lifetimes. That oral knowledge turned out to be conservative.

The Y chromosome is among the smallest in the human body and carries the fewest genes. Researchers are paying renewed attention to its role in cancer—specifically, what happens when it vanishes.

Three specific genes on chromosome 21 drive widespread brain changes in Down syndrome, uncovering a new framework for ...

India, March 17 -- Selfish chromosomes bias genetic inheritance by manipulating the overdrive (Ovd) gene, a natural sperm quality control checkpoint.

Humans and Neanderthals cozied up from time to time when they lived in the same areas tens of thousands of years ago. But we don’t know much about who got with whom, or why.