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1下列六种遗传病中属于性染色体病的是( )①苯丙酮尿症 ②21三体综合征 ③性腺发育不良④青少年型糖尿病 ⑤抗维生素D佝偻病 ⑥猫叫综合症
A.③
B.③⑤
C.①③④⑤
D.②③⑥
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2若“M → N ”表示由条件M一定能推得N,则这种关系可表示为( )
A.M表示遵循基因分离定律,N表示遵循自由组合定律
B.M表示基因频率的改变,N表示生物的进化
C.M表示基因突变,N表示性状的改变
D.M表示某单倍体植株,N表示用秋水仙素处理得到纯合体
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3假定某致病基因a位于X染色体上,且隐性致死(使受精卵、胚胎致死)。一男子与一女性携带者结婚,理论上分析,这对夫妇所生的小孩性别比例(女孩:男孩)是( )
A.1 :1
B.1 :0
C.3 :1
D.2:1
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4人的胰岛素基因和得以表达的胰岛素基因依次位于( )
A.体细胞、胰岛细胞中
B.胰岛细胞、体细胞中
C.均位于胰岛细胞中
D.均位于体细胞中
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5在下列细胞中,一定存在Y染色体的细胞是( )
A.大麻的花粉母细胞
B.果蝇的精细胞
C.人的次级精母细胞
D.鸡的受精卵
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6人类的红绿色盲基因位于X染色体上,父母表现型正常,生下3胞胎孩子。其中只有一个患色盲,有两个孩子为同卵双胞胎。3个孩子的性别不可能是( )
A.2女1男
B.全是男孩子
C.全是女孩或2男1女
D.全是男孩或2女1男
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7某双链DNA分子共有含氮碱基1400个,其中一条单链上(A+T):(C+G)=2:5。则该DNA分子连续复制两次共需游离的胸腺嘧啶脱氧核苷酸的数目是( )
A.300个
B.400个
C.600个
D.1200个
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8在一个DNA分子中,腺嘌呤与胸腺嘧啶之和占全部碱基数目的54%,其中一条链中鸟嘌呤、胸腺嘧啶分别占该链碱基总数的22%和28%,则一般来说由该链转录的信使RNA中鸟嘌呤占碱基总数的( )
A.24%
B.22%
C.26%
D.23%
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9右边表格表示某草原生态系的食物网情况(√表 示其左侧竖栏所示生物以上面横栏中所示生物为食),以下分析正确的是( ) <table style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-COLLAPSE: collapse; MARGIN-LEFT: 6.75pt; BORDER-TOP: medium none; MARGIN-RIGHT: 6.75pt; BORDER-RIGHT: medium none" border="1" cellspacing="0" cellpadding="0" align="right" _dj="MsoNormalTable"><tbody><tr style="HEIGHT: 19.15pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: 1pt solid; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">草</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: 1pt solid; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">a</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: 1pt solid; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">b</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: 1pt solid; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">c</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: 1pt solid; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">d</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: 1pt solid; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">e</td></tr><tr style="HEIGHT: 19.15pt"><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">a</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">√</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td></tr><tr style="HEIGHT: 19.15pt"><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">b</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">√</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td></tr><tr style="HEIGHT: 19.15pt"><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">c</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">√</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td></tr><tr style="HEIGHT: 19.15pt"><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">d</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">√</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td></tr><tr style="HEIGHT: 19.15pt"><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">e</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">√</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33">√</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 24.8pt; PADDING-RIGHT: 5.4pt; HEIGHT: 19.15pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" valign="top" width="33"> </td></tr></tbody></table>
A.此食物网有4条食物链
B.如果人类大量捕杀c会使d的数量减少
C.次级消费者有b、d、e
D.如果能量传递效率都按10%计算,并且草传递给b和c的能量相等,那么a的能量与d的能量相等
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102008年9月,有北美“吸血鬼”之称的悬铃木方翅网蝽惊现成都,它用针状的嘴专刺吸梧桐叶里的汁液,导致成都70%梧桐树叶片枯黄脱落,树木提前进入“冬季”。下列说法正确的是( )①悬铃木方翅网蝽与法国梧桐之间的关系属于寄生 ②外来物种的入侵是破坏我国生物多样性的主要原因 ③悬铃木方翅网蝽刺吸梧桐叶汁液,可以导致叶片光合作用减弱,影响生长 ④生物多样性包括三个层次:基因多样性、遗传多样性、物种多样性 ⑤悬铃木方翅网蝽的个体发育属于变态发育 ⑥由于受自身密度影响,悬铃木方翅网蝽种群最终呈“S”型曲线增长
A.①③⑤⑥
B.②③④⑤
C.③④⑤⑥
D.①②③⑤
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