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A delicate, innocuous little fossil reptile known as Mirasaura grauvogeli – “Grauvogel’s wonder reptile” – is forcing a ...
You've probably seen monarch butterflies, and maybe monarch caterpillars, but there's a lot to learn about the monarch life cycle stages.
Birds evolved a unique microRNA, MIR2954, to protect male embryos from gene overdose. Without it, male birds die early.