首页
登录
职称英语
Why past generations regarded women as the weaker sex is a mystery to anyone
Why past generations regarded women as the weaker sex is a mystery to anyone
游客
2025-03-26
19
管理
问题
Why past generations regarded women as the weaker sex is a mystery to anyone who has examined the question objectively, for they are far stronger than men—outliving them in pretty well every society in the world. Partly that is because men are more violent, and their violence is largely directed at other men. But partly it is physiological. Men seem to wear out faster than women do. Yet no one knows why.
Madeleine Beekman of the University of Sydney and her colleagues, however, have a hypothesis. They think at least some of the blame lies with subcellular structures called mitochondria (线粒体), which provide the body with its power by burning glucose and using the energy thus released to make a molecule that is biology’s universal fuel.
Mitochondria are amusing. They are descendants of bacteria that teamed up with the ancestors of animal and plant cells about a billion years ago. They retain their own genes, which is where problems start. To avoid fights between genetically different mitochondria in the same cell, most species have arranged for their mitochondria to come from only one parent—usually the mother so that a male’s mitochondria are stuck in an evolutionary dead end. They can neither evolve in male-specific ways nor be passed on to the next generation.
Male and female physiologies are sufficiently similar for this not to be a central problem, but Dr. Beekman thinks it may matter at the margins. She observes that one disease, caused by a faulty mitochondrial gene, occurs in only 10% of women whose cellular power-packs include the damaged gene, but in 50% of men whose mitochondria are so hindered. The gene in question, in other words, is less likely to harm a woman than a man. She then lists a lot of other diseases, including ones far commoner that sometimes have a mitochondrial component, and speculates that some of these may prove to be either more common or more serious in men than in women. As far as her literature search can show, this is not something that has yet been looked into.
Part of the reason for this absence of information may be that few doctors think like evolutionary biologists, so they fail to ask appropriate questions. Dr Beekman’s hypothesis may turn out to be wrong, but sounds remarkably
plausible
and certainly worth investigating. [br] Dr. Beekman’s speculation as mentioned in Paragraph 4 is that________.
选项
A、males are born more vulnerable to some diseases than females
B、a damaged gene is more likely to harm a woman than a man
C、mitochondria are hindered in more females than in males
D、some diseases have never been mentioned in any literary works
答案
A
解析
文章第四段后面有speculates that some of these(diseases)may prove to be either more common or more serious in men than in women,表明男性更容易患某些疾病。
转载请注明原文地址:https://tihaiku.com/zcyy/4013879.html
相关试题推荐
Whypastgenerationsregardedwomenastheweakersexisamysterytoanyone
Whypastgenerationsregardedwomenastheweakersexisamysterytoanyone
Whypastgenerationsregardedwomenastheweakersexisamysterytoanyone
Whypastgenerationsregardedwomenastheweakersexisamysterytoanyone
Foranyonewhoisreallyconcernedaboutkeepingtheirthoughtsprivatethere
Foranyonewhoisreallyconcernedaboutkeepingtheirthoughtsprivatethere
Foranyonewhoisreallyconcernedaboutkeepingtheirthoughtsprivatethere
Whatisthispassagemainlyabout?[br]Whyaremiddlemanagersregardedasthe
Amajority______collectivelymayberegardedasabeingwhoseopinionsand,mo
Woman:Iheardtherewasaterriblemineaccident.Theydidn’twantanyonetokn
随机试题
TheWonderfulWorldofSmallThere’saq
Therehasrarelybeenatoughertimetobeacarmaker,Squeezedbythecred
MostBritishcouples,whetherreligiousornot,haveachurchwedding,which
下面哪项不属于阴经()A.心经 B.肺经 C.肾经 D.胆经
水泥混凝土的坍落度试验人工拌和时间不宜超过15min。
患儿,男,6岁,在河中游泳时溺水,现场心肺复苏成功后转入ICU病房,患儿神志不清
以下是反映我国人才资源现状的一些数据:在高层次人才方面,两院院士由刚建院的233
下列关于零售业态变迁的理论假说的说法错误的是()。A:零售之轮假说是由美国哈佛大
(2018年真题)拨备覆盖率等于商业银行计提的()之比。A.贷款损失准备与
根据《标准监理招标文件》,关于监理合同中按天计算期限的说法,正确的是( )。A
最新回复
(
0
)