The Avenue des Champs-ElysÃ©es is probably the most famous avenue in the world. This impressive street stretches from the Place the la Concorde to the Place Charles de Gaulle, the site of the Arc de Triomphe.
Best Answer: Crossing-over is another name for recombination or physical exchange of equal pieces of adjacent non-sister chromatids. When crossing-over occurs chromatids break and may be reattached to a different homologous chromosome.
cross over, 1  Biology. (of a chromosome segment) to undergo crossing over. 2  to switch allegiance, as from one political party to another. 3  to change successfully from one field of endeavor, genre, etc., to another: to cross over from jazz to rock. 4  to die; pass away.