A novel molecular tool developed by a Lehigh University professor of biological sciences is enabling scientists to precisely ...

Sometimes it’s easy to tell if something is living or not. A teddy bear might look like a bear, but it cannot do any of the seven things it needs to be able to do to count as being alive.

Gametes are an organism's reproductive cells. They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells ...

We still don't understand enough of the unique biology of human gametogenesis (the formation of reproductive cells) to reproduce Hayashi's provocative work in mice''. Details were presented at the ...

Researchers have discovered how egg cells prepare for life by studying the Balbiani body, a structure that organizes key ...

The Principle of Segregation describes how pairs of gene variants are separated into reproductive cells. The segregation of gene variants, called alleles, and their corresponding traits was first ...

Reproductive cells—sperm and eggs—contain half the number of chromosomes found in other body cells, a reduction critical for reproduction. When a sperm meets an egg, the resulting offspring ...

When DNA damaged by radiation was repaired by a method called homologous recombination, they found that cancer cells died ...

Like the brain, he said, reproductive systems "epidemiologically appear to be sensitive" to smoke, and researchers predict sperm cells that mature during intense exposure to smoke will be of lower ...