Latest Christiane Nüsslein-Volhard Stories
Scientists have suspected that spare parts in the genome"”extra copies of functional genes that arise when genes or whole genomes get duplicated"”might sometimes provide the raw materials for the evolution of new traits. Now, researchers report in a study published online on September 3rd in Current Biology, a Cell Press publication, that they have discovered a prime example of this in fish. The researchers show that a duplicate copy of a gene involved in embryonic development has...
- The navel or umbilicus.
- In Greek archaeology: A central boss, as on a shield, a bowl, etc.
- A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.