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Pseudogenes, also known as noncoding DNA, are extra DNA in a genome that do not get transcribed into RNA to synthesize proteins. Some of this noncoding DNA has known functions, but much of it has no known function and is called "Junk DNA".
Common descent is a concept in evolutionary biology applicable when one species is the ancestor of two or more species later in time. According to modern evolutionary biology, all living beings could be descendants of a unique ancestor commonly referred to as the last universal common ancestor (LUCA) of all life on Earth.
It is not known whether homochirality existed before life, whether the building blocks of life must have this particular chirality, or whether life must be homochiral at all. [8] [9] What do all the unknown proteins do? Two decades since the first eukaryotes were sequenced, the "biological role" of around 20% of proteins are still unknown. [10]
TIL Using machine learning, researchers have been able to decode what fruit bats are saying--surprisingly, they mostly argue with one another. Image credits: Festina_lente123 #2
Instead, by the time the LUCA lived, RNA viruses had probably already been out-competed by DNA viruses. [73] LUCA might have been the ancestor to some viruses, as it might have had at least two descendants: LUCELLA, the Last Universal Cellular Ancestor, the ancestor to all cells, and the archaic virocell ancestor, the ancestor to large-to ...
This Christmas, plenty of people will find DNA tests under the tree. They're easy to use — just send 23andMe, Ancestry, or one of their competitors your spit, and in exchange you're promised a ...
Unusual names have caused issues for scientists explaining genetic diseases to lay-people, such as when an individual is affected by a gene with an offensive or insensitive name. [13] This has particularly been noted in patients with a defect in the sonic hedgehog gene pathway and the disease formerly named CATCH22 for "cardiac anomaly, T-cell ...
Starbucks, the Seattle-based coffee chain, has been in business since 1971. It recently reversed its open-door policy — and here are some other compelling facts about the restaurant.