如图表示果蝇某正常基因片段控制合成多肽的过程，a～d表示4种基因突变．a丢失T/A，b由T/A变为C/G，c由T/A变为G/C，d由G/C变为A/T．假设4种突变都单独发生，请回答：注：可能用到的密码

题干

如图表示果蝇某正常基因片段控制合成多肽的过程，a～d表示4种基因突变．a丢失T/A，b由T/A变为C/G，c由T/A变为G/C，d由G/C变为A/T．假设4种突变都单独发生，请回答：

注：可能用到的密码子：天冬氨酸（GAC），甘氨酸（GGU、GGG），甲硫氨酸（AUG），终止密码（UAG）．

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Would you like to learn English well?

4 weeks

Monday (18:30-20:00)

English Club

Phone NO.62258

Do you enjoy learning to use the computer?

3 weeks

Tuesday( 19:30-21:00)

Internet Club

Phone No.62279

Would you like to be an artist?

For drawing beginners only

8 weeks Thursday (19:00-20:30)

Art Club

Phone No.62537

Fancy taking photos?

Bring your camera with you!

6 weeks Saturday (9:00-10:30)

Photo Club

Phone No.62587

Are you good at swimming?

7 weeks

Sunday (100:00-11:30)

Swimming Club

Phone No.61852

Are you animal lovers?

5 weeks

Wednesday (14:00-15:30)

Nature Club

Phone No.61866

There are____clubs here for people to choose from.	People go to all these clubs____a week.
Only drawing____can go to Art Club.	____Club and____Club last for less than one month.
If you are free only in the afternoon, you can go to ____ Club.	People in Photo Club must bring a ____ with them.
If you like animals , you can call on ____	____ Club is the longest and ____Club is the second longest.