Related topics: climate change · extinction · plants · biodiversity · plos one

Safer CRISPR gene editing with fewer off-target hits

The CRISPR system is a powerful tool for the targeted editing of genomes, with significant therapeutic potential, but runs the risk of inappropriately editing "off-target" sites. However, a new study publishing July 9, 2020 ...

Nearly all Madagascar's lemur species 'face extinction'

Almost all species of lemur, the small saucer-eyed primates native to Madagascar, face extinction, an international conservation body warned on Thursday, adding to its growing list of animals and plants under threat.

Lefties and righties: Asymmetry in fish genitalia

Evolutionary biologists from the University of Konstanz have resolved a century-old question regarding the asymmetric genitals of internally fertilizing fishes of the family Anablepidae. Surprisingly, the direction of genital ...

Bats are hosts to a range of viruses but don't get sick – why?

Bats harbour many diverse viruses, including coronaviruses. Indeed, SARS, Mers and COVID-19—which are all caused by coronaviruses—are thought to have emerged from bats. These diseases can be deadly to humans, yet bats ...

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Species

In biology, a species is:

There are many definitions of what kind of unit a species is (or should be). A common definition is that of a group of organisms capable of interbreeding and producing fertile offspring, and separated from other such groups with which interbreeding does not (normally) happen. Other definitions may focus on similarity of DNA or morphology. Some species are further subdivided into subspecies, and here also there is no close agreement on the criteria to be used.

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