the changes in the amino acid sequences of proteins that take place during evolution and speciation, and from which the dates of branchings of taxonomic groups can be deduced.
What Does ⏰ Alarm Clock Emoji Mean?The alarm clock emoji depicts an old fashioned alarm clock, sitting on two short legs with two clangers (yup, that's a technical term) perched on top.
Tick, Tock: What Is The “Doomsday Clock?”What is the Doomsday Clock? Doomsday is one of those evocative words that paint a very vivid picture. As our definition states, “the day of the Last Judgment, at the end of the world; nuclear destruction of the world; given to or marked by forebodings or predictions of impending calamity; especially concerned with or predicting future universal destruction.” As you can see, it’s about as …
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019