Scientists slow aging by engineering longevity in cells

Human lifespan is related to the aging of our individual cells. Three years ago a group of University of California San Diego researchers deciphered essential mechanisms behind the aging process. After identifying two distinct ...

Novel sex-determination mechanism revealed in mammals

In mammals, the distinction between male and female at the chromosomal level is due to the X and Y chromosomes. Typically, females have two X chromosomes (XX) while males have an X and a Y chromosome (XY). The Sry gene on ...

Butterfly wing patterns emerge from ancient "junk" DNA

Butterfly wing patterns have a basic plan to them, which is manipulated by non-coding regulatory DNA to create the diversity of wings seen in different species, according to new research.

How calcium ions get into the cellular power stations of plants

Calcium is a very special nutrient. In the cells of most living beings calcium ions function as so-called second messengers to transmit important signals. The same applies equally to animal, plant and fungal cells. Through ...

Tethers bring distant genes together to coordinate embryo development

Organisms such as plants, mammals and insects undergo a carefully orchestrated developmental program as they transition from single-celled embryos to their multicellular adult forms. In a paper that appeared May 4, 2022 in ...

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