Goodluck Jonathan Goodluck Jonathan Goodluck Ebele Azikiwe Jonathan (born 20 November 1957) is a Nigerian politician who served as the President of Nigeria from 2010 to 2015. Prior to that he served as Vice-President of Nigeria from 2007 to 2010 and as Governor of Bayelsa State from 2005 to 2007. He lost the 2015 presidential election to Muhammadu Buhari, becoming the first sitting Nigerian president to concede electoral defeat. Jonathan was born in what is now Bayelsa State to a family of canoe makers. He holds a B.Sc. degree in Zoology(Second Class Honours), an M.Sc. degree in Hydrobiology and Fisheries biology and
Spatiotemporal gene expression of tissue that will develop into the adult wings. The spatiotemporal pattern of "wingless" gene expression is determined by a network of regulatory interactions consisting of the effects of many different genes such as "even-skipped" and "Krüppel." What causes spatial and temporal differences in the expression of a single gene? Because current expression patterns depend strictly on previous expression patterns, there is a regressive problem of explaining what caused the first differences in gene expression. The process by which uniform gene expression becomes spatially and temporally differential is known as symmetry breaking. For example, in the case of embryonic "Drosophila"