How some bacteriophages use CRISPR against competing viruses

Some viruses carry CRISPR weapons of their own

Some viruses that infect bacteria carry small CRISPR systems with genetic pieces aimed at other viruses or plasmids. These systems can help one virus fight competing pieces of genetic material.

An inscription mentions a “house of David”

The Tel Dan stele is an Aramaic inscription from the late ninth or early eighth century BCE. Its mention of a “house of David” suggests the David tradition predates the late sixth century BCE, but does not establish the Bible’s placement of David and Solomon in the tenth century BCE.

Psychology studies use an unusually narrow slice of humanity

A large share of psychology research studies people from Western, educated, rich, industrialized, and democratic societies. People in these groups are not a random sample of humanity, so findings from them cannot automatically be assumed to describe everyone.

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How some bacteriophages use CRISPR against competing viruses

Some viruses carry CRISPR weapons of their own

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