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.
3. Explain how crossing over of chromatids in prophase I leads to genetic recombination, ensuring the gametes produced from one parent to be virtually all unique. During crossing over, homologous chromatids break and exchange equivalent segments, resulting in new combination of genes from the two parents.