首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
In 1 999 when MiShel and Carl Meissner decided to have children,they tackled the next big is sue:Should they try to have a girl?
In 1 999 when MiShel and Carl Meissner decided to have children,they tackled the next big is sue:Should they try to have a girl?
admin
2015-03-02
26
问题
In 1 999 when MiShel and Carl Meissner decided to have children,they tackled the next big is sue:Should they try to have a girl?It was no small matter.MiShel’S brother had become blind from a hereditary condition in his early 20 s,and the Meissners had learned that the condition is a disorder passed from mothers to sons.If they had a boy.he would have a 50 percent chance of having the condition.A girl would be unaffected.The Briti.sh couple’S inquiries about sex selection led them to Virginia,U.S.,where a new sperm separation technique,called MicroSort,was experimental at the time When MiShel became pregnant she gave birth to a daughter.Now they will try to have a second daughter using the same technique The technique separates sperm into two groups--those that carry the X’chromosome producing a female babv and those that carry the Y.chromosome producing a male baby.
The techn010gy was developed in 1 990s,but the opening of a laboratory in January 2003 in California marked the company’s first expansion.“We believe the number of people who want this technology is greater than those who have access to it,”said Keith L. Blauer,the company’s clinical director.
This is not only a seemingly effective way to select a child’s gender.It also brings a host of ethical and pI.actical considerations--especially for the majority of families who use the technique for nonmedical reasons.
The clinic 0fiers sex selection for two purposes:to help couples avoid passing on a sex—linked genetic disease and t0 allow those who already have a child to“balance’’their family by having a baby of the opposite sex.
Blauer said the company has had an impressive success rate:9 1 percent of the women who beccome pregnant after sorting for a girl are successful, while 76 percent who sort for a boy and get pregnant are successful.
The technique separates speitll based on the fact that the X chromosome is larger than the Y.
Chromosome A machine is used to distinguish the size differences and sort the sperm accordingly.
According to Mr.Blauer.by using the new technology,___________.
选项
A、9 1%of the women successfully give birth to girls
B、76%of the women get pregnant with boys
C、it is more successf_ul for those who want to have girls
D、it is more successful for those who want to have boys
答案
C
解析
文章的第六段指出:Blauer说该公司的成功率令人瞩目:91%想要生女孩的妇女成功受孕,76%想要男孩的妇女成功受孕。
转载请注明原文地址:https://jikaoti.com/ti/cwbUFFFM
本试题收录于:
艺术硕士(艺术基础)题库专业硕士分类
0
艺术硕士(艺术基础)
专业硕士
相关试题推荐
从各种信用形式的特点出发,论述我国应怎样运用这些信用形式。
中国财政部背书的银行发行的金融债券是()。
中央银行扭曲操作时买进票据与卖出国债,其结果为()。
下面属于中央银行的基础职能是()。
中央银行若提高再贴现率,将()。
某公司的债务为5.3亿元,股票市值为74.1亿元,公司为扩大生产需要调整其资产结构,假设公司的权益贝塔为0.87,无风险利率3.5%,市场预期收益率为14%,借款利率为8%。为了扩大房地产项目的投资,公司的负债权益比将调整为25%,若借款利率不变,公司在新
TED利差(欧洲美元的LIBOR利率与同期限的国债利率之差)在金融危机时期会变得更大。[中国人民大学2012研]
某公园本月取得门票收入和游艺场经营收入20万元,没有分别核算。同时给某民间艺术团表演提供场地取得收入3万元,已知文化体育业适用税率3%,服务业适用税率5%,娱乐业适用税率20%。则下列处理正确的是()。
清代戏曲声腔发展最辉煌的成就是________的形成。
写王昭君和番故事的元杂剧是()。
随机试题
用杠杆千分表测量工件时,测杆轴线与工件表面夹角α为30°,千分表读数为0.027mm,求正确测量值。
患儿,男,1月龄。诊断为先天性肌性斜颈。最佳手术时机为()
肠外营养液成分多、配制工序科学;例如维生素的加入方式应该是
患者女,13岁,正在进行正畸治疗,医生建议她使用氟化凝胶防龋医生叮嘱患者下次复诊时间
某建筑工程,南北朝向,桩基采用锤击法施工,基础底板长×宽×厚为40m×20m×1.1m,不设后浇带和变形缝,该建筑为钢筋混凝土框架结构,普通混凝土小型空心砌块填充墙作围护结构。底板混凝土标号为C35P8,配制底板混凝土采用P.032.5水泥,浇筑时采用1台
期末结账时,对没有余额的账户应当()。
某居民企业(非金融企业)2014年度生产经营情况如下:(1)产品销售收入8000万元,与收入配比的销售成本3000万元。(2)转让技术所有权取得收入1200万元,与技术转让有关的成本费用400万元。(3)已计入企业成本、费用中
将圆x2+y2=1上每-点的横坐标保持不变,纵坐标变为原来的2倍,得曲线C.设直线l:2x+y-2=0与C的交点为P1,P2,以坐标原点为极点,x轴正半轴为极轴建立极坐标系,求过线段P1P2的中点且与l垂直的直线的极坐标方程.
(1990年)设F(χ)=,其中f(χ)在χ=0处可导,f′(0)≠0,f(0)=0,则χ=0是F(χ)的【】
运行下列程序,最后在窗体中输出【】。PrivateSubcommand1_Click()a=65:b=17a=aModb^2a=a\4PrintaEndSub
最新回复
(
0
)