How diseases develop and how the body ages can differ between females and males, but the biological reasons for these ...

Scientists in Japan have developed a rat-mouse hybrid embryo from a single frozen rat chromosome transplanted into a mouse ...

Scientists discovered a new gene family on the Y chromosome of deer mice, challenging the belief that the chromosome only ...

It's tricky to make an exact copy of yourself. Or at least it is for cells undergoing mitosis, where cells replicate ...

In each cell of your body, DNA is stored in structures called chromosomes. When cells divide, these chromosomes are copied, ...

Triploidy is a condition that affects 1% to 3% of pregnancies. It’s when a developing baby has an extra set of chromosomes, the thread-like structures that carry DNA. A triploidy pregnancy usually ...

Merotelic kinetochore (single kinetochore attaches to microtubules from two spindle poles) has been proposed to be the major mechanism underlying the spontaneous formation of lagging chromosomes, ...

Chromosomal instability is a common feature in many solid tumors and is associated with greater aggressiveness. For years, its main contribution to cancer was thought to be driving the evolution of ...

Humans contain 46 chromosomes (23 from their mother, and 23 from their father) in each of their body cells. This image shows duplicated chromosomes from a human male. Summary Scientists at the Sloan ...

A human cell carries in its nucleus two meters of spiraling DNA, split up among the 46 slender, double-helical molecules that are its chromosomes. Most of the time, that DNA looks like a tangled ball ...

Prenatal genetic tests can detect sex chromosome aberrations, but what happens after—for families and children—is anything but clear. When Ollie’s mother, Katie, was nine weeks pregnant, her ...

Like mitosis, meiosis is a form of eukaryotic cell division. However, these two processes distribute genetic material among the resulting daughter cells in very different ways. Mitosis creates two ...