
習作 L2 練習
Quiz
•
Biology
•
7th Grade
•
Practice Problem
•
Medium
Wei-Shin Huang
Used 5+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
桃子的果實表面光滑是由顯性等位基因所決定,表面有毛則是由隱性等位基因所決定。如果將純種有毛桃子的雌蕊與純種光面桃子的花粉,以人為方式授粉,則該雌蕊授粉後的種子所發育成的果實應為如何?
均為光面桃子
光面與毛面的桃子都有,比例是1:1
均為毛面桃子
光面與毛面的桃子都有,比例是3:1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一對白狗,第一胎生出一隻黑狗,根據這個事實,下列何項推論正確?
決定表徵為白色的等位基因為隱性
第一胎的黑狗必定帶有白色的等位基因
這一對白狗的第二胎也一定是黑狗
這一對白狗一定帶有黑色的等位基因
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
果蠅正常翅為顯性,以T表示,短翅為隱性,以t表示。今將等位基因組合為Tt及TT的兩隻正常翅果蠅,以手術方法將翅剪成短翅,兩者交配後若無突變發生,則所生的子代出現短翅機會為多少?
0
1/2
3/4
1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
人體某一個肌肉細胞內控制耳垂位置的兩個等位基因,應該位於何處?
同一條染色體的同一位置上
同一條染色體的不同位置上
同一對染色體的相同位置上
不同對染色體的相同位置上
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
人類乾耳垢為隱性等位基因a所控制,有一對夫妻皆為溼耳垢,其獨生子為乾耳垢,則先生的等位基因組合應為下列何者?
AA
Aa
aa
AA、Aa、aa
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
某位女性的血型為AB型,則此位女性結婚後,絕對不會生出哪一種血型的子女?
O型
AB型
A型
B型
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
為民婚後多年仍無子嗣,經由醫學檢查,發現其精液中約有2億個精子,請問為民的精子含有的性染色體形式為何?數目應是多少?
2億個精子均含有XY染色體
2億個精子均含有Y染色體
約有1億個精子含有X染色體,1億個精子含有Y染色體
約有1億個精子含有XX染色體,1億個精子含有XY染色體
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