教甄◆英文科題庫

說明：請將下列選文改寫，並以改寫後全文進行克漏字(綜合測驗)題組命題，該題組應有 5 題選擇題。            The Gibbon Genome Sequencing Consortium has successfully sequenced the genome of the Northern white-cheeked gibbon. Both gibbons and humans have DNA that changes during the course of their lifetime. Some DNA changes in humans are the result of mutations, which cause cancer and other diseases. The changes in gibbons' DNA have resulted in many changes to the species over a very short period of time. Although gibbons are close relatives to humans, their DNA changes do not cause disease. Understanding the pattern of the gibbon genome might turn out to be very important to humans. If these changes in DNA can be understood, scientists may be able to use the information to better understand human disease. 

     Cancer and other genetic diseases are caused by faulty gene regulation. Scientists have sought to understand human biology through the lens of gibbon DNA structures for some time. Until now, there has simply been too much information to analyze. The endless rearrangements made it difficult to align gibbon DNA to that of humans, but it has finally been accomplished. Scientists discovered a piece of DNA that is unique to the gibbon species. Gibbons have a specific repeat element, or a piece of DNA that copies itself multiple times throughout the genome. Repeat elements, in both gibbons and humans, are related to the maintenance of genetic structures. Scientists hope to be able to answer the question "Why can gibbon DNA rearrange itself without causing diseases—unlike humans' DNA?" If this complicated biological question can be solved, scientists may be able to work backward in order to help stop cancer, heart failure, and other human disease related to genetic repeats.