问题 读图填空题

某地发现一个罕见的家族,家族中有多个成年人身材矮小,身高仅1.2米左右。下图是该家族遗传系谱,请据图分析回答问题

(1)该家族中决定身材矮小的基因是_______性基因,最可能位于_______染色体上。该基因可能是来自_______号个体的基因突变。

(2)该家族身高正常的女性中,有_______种可能的基因型。

(3)若Ⅱ1和Ⅱ2再生一个孩子,这个孩子是身高正常的女性的概率为________;若Ⅳ3与正常男性婚配后生男孩,这个男孩成年时身材矮小的概率为______________。

答案

(1)隐   X    Ⅰ1

(2)2

(3)1/2     1/8

阅读理解

阅读理解。

     HongZhanhui is a 23-year-old college student. He has raised an abandoned (被遗弃的) child for 11years.

This story moved millions of Chinese people. Hong was born in a small village in Henan Province. When he

was 12, his father suddenly went crazy (疯狂的,古怪的) and killed his lovely sister.

     Hong was very sad. He missed his sister very much. Then the family adopted (收养) a baby girl called

Chenchen.

     The illness of Hong's father became worse and worse, He often hit his wife. Later, Hong's mother ran away

from home. Hong had to support the family and bring up Chenchen by himself.

      In 1998, Hong entered Xihua No.Senior High School, about 20 kilometres from his home. Hong took

Chenchen along with him. He never talked to others about his hard life. He put his part-time into many things:

working to get money, looking after his adopted sister, and sending medicine home for his father. He sold,

pens, books, tapeds and phone cards after school."Many people looked down on me for that,"Hong said,"But I

didn't care."

      In 2003 Hong entered Hunan huaihua College. Hong sent Chenchen, now 12, to a primary school in Hunan with the money he got. When Hong's story became public, many people wanted to gave him money. But Hong

refused.

     "Poverty(贫穷、贫困)and suffering (苦难) should not be an excuse for begging sympathy (同情) and help

from society,"said Hong."I think it is most important for a man to support himself and be strong."

     What a self-supporting man he is! We should learn from him all.

1. Why did the family adopt the baby girl called Chenchen?

A. Because Hong's mother killed her daughter.

B. Because Hong's father went crazy.

C. Because Hong's father killed his little daughter and Hong was very sad.

D. Because Hong was a college student. And he had much money.

2. Why did Hong have to support the family and bring up Chenchen by himself?

A. Because his mother was dead and his father went crazy.

B. Because his mother ran away and his father went crazy.

C. Because his family was very poor.

D. Because his father went out to work.

3. What did Hong do when he was a Senior High School student?

A. He worked to get money, looked after his sister and bought his father some medcine.

B. He looked down on others, looked after his adopted sister.

C. He talked to others about his life, sold tapes and phone cards.

D. He watched TV, played games and sold books.

4. Hong refused other people's help because _____.

A. He had much money

B. Hong wanted to deal with his own problems by himself

C. Hong wanted to be known by others

D. Hong lived a poor and helpless life

5. The arricle tells us _____.

A. we should know how to earn (赚得、挣得) money

B. how a young man supported a poor family and entered college

C. poverty and suffering could sometimes be useful

D. college students could adopt children

多项选择题