首页
登录
职称英语
Several research groups in the United States are conducting genetic research
Several research groups in the United States are conducting genetic research
游客
2024-08-14
31
管理
问题
Several research groups in the United States are conducting genetic research aimed at retarding aging. If the breakthroughs of recent years are anything to go by, it is likely that we will see several-fold longevity increases in mice within the next decade or so. Already such genetic manipulation has increased by almost 50% the life span of flies. Results are also promising in mammals: scientists have extended longevity in mice by 50% through genetic interventions. Achieving similar results in humans will be harder. Scientists have already identified genes that appear to accelerate human aging, but they have yet to find genes with the opposite effect. But with the sequencing of the human genome, we are now in a better position to find out more about aging in humans as well as animals.
For those who cannot wait, there is one method available today that might delay human aging, caloric restriction. This means simply a diet with few calories. Experiments have shown longevity increases of more than 50% in certain mammals that follow such diets. Most people, however, feel that the secondary effects of this outweigh the benefits. After all, what is the point of living longer if you cannot enjoy life? If science is to extend human longevity, it will have to do so by extending the duration of human life in age-related disability. The extra years of life must allow future grandparents to enjoy life, not just live.
Although some scientists argue that aging will never be cured and our grandparents will continue to fit our stereotypes, many others remain confident that we will soon learn how to modulate the human aging process. " I believe our generation is the first to be able to map a possible route to individual immortality," says William Haseltine, CEO of Human Genome Sciences Inc. in Rockville, Maryland. If a therapy could slow human aging by 50% , for instance, we could have 30 or 40 more years of life. In that time, new discoveries could be made that would allow us to live even longer, and the cycle could continue until a cure for aging is discovered. "It’s possible that some people a-live now may still be alive 400 years from now," claims gerontologist S. Michal Jazwinski of Louisiana State of University Health Sciences Center. But what would be consequences of extending human longevity or finding a real cure for aging?
Researchers have achieved success in【A1】______the aging of flies. But similar results in humans are not encouraging. Other than finding genes that slow down human aging, scientists have identified genes that appear to【A2】______it. However, there might be one way of delaying aging, i. e. caloric【A3】______which means following certain diets with few calories. Meanwhile, it is necessary to think about the significance of living longer and how to【A4】______the aging process. Some optimistic people believe that it is possible to extend human longevity while others are quite concerned about the【A5】______of it. [br] 【A5】
选项
答案
consequences
解析
(第三段最后一句提问,延长人类寿命或是找到治疗衰老的方法的结果会是什么呢?因此填consequences。)
转载请注明原文地址:https://tihaiku.com/zcyy/3719884.html
相关试题推荐
Aresearchersaysleadintheenvironmentcouldbeamajor【D1】______byyoung
Aresearchersaysleadintheenvironmentcouldbeamajor【D1】______byyoung
Aresearchersaysleadintheenvironmentcouldbeamajor【D1】______byyoung
Aresearchersaysleadintheenvironmentcouldbeamajor【D1】______byyoung
Aresearchersaysleadintheenvironmentcouldbeamajor【D1】______byyoung
Aresearchersaysleadintheenvironmentcouldbeamajor【D1】______byyoung
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
随机试题
Hegotajobsothathecouldbeindependent______hisparents.A、onB、inC、ofD
________beforewedepartthedayaftertomorrow,weshouldhaveawonderfuldinn
Desktoppublishingsystemisamodernpublishingsystemwhichmakesuseofc
TCP/IP模型中,Telnet属于( )协议。A.接口层 B.网络层 C
健康管理一对一指导的特点包括()。A.针对目标个体的健康教育要求和特点 B.能
2012年全国国道网车流量较大的地区主要集中在北京、天津、上海、江苏、浙江、广东
下列关于我国对资本充足率要求的说法中,正确的是()。A.我国对商业银行资本充足率
期货公司应当()进行离任审计,并自其离任之日起3个月内将审计报告报中国证券监督
A.大黄 B.芦荟 C.土牛膝 D.土荆芥 E.巴豆含蒽酰苷类对肾有影响
在我国,税法生效的途径有()。A.税法通过一段时间后开始生效 B.税法自通过
最新回复
(
0
)