第26章測驗
Quiz
•
Biology
•
7th - 9th Grade
•
Practice Problem
•
Hard
Aristo Biology
Used 16+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果DNA樣本中,有20%的含氮鹼基是腺嘌呤 (A),那麼鳥嘌呤 (G) 的百分比是多少?
A. 20%
B. 30%
C. 40%
D. 無法確定
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
果蠅的翅膀可以是長的,也可以是退化的。一隻擁有退化翅的雌性果蠅與一隻擁有長翅的雄蠅雜交。所有的第一子代都有長翅膀。第一子代相互雜交,產生第二子代。第二子代有退化翅的機會率是多少?
A. 25%
B. 50%
C. 75%
D. 100%
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
鼠的毛色由一對等位基因控制。相對於棕毛的等位基因,黑毛的等位基因屬顯性。以下哪一項可確認一隻黑毛鼠是雜合子?
A
B
C
D
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
豚鼠毛的長度和毛的顏色分別受兩個不同的基因控制。擁有長棕毛的純種豚鼠與擁有短黑毛的純種豚鼠交配,產生的四隻後代均擁有短棕毛。
從以上個案能得出甚麼結論?
(1) 短毛屬顯性,長毛則屬隱性。
(2) 四隻後代在毛的長度和顏色兩方面的基因型均是相同。
(3) 控制毛的長度和顏色的基因位於不同的染色體。
A. 只有 (1) 和 (2)
B. 只有 (1) 和 (3)
C. 只有 (2) 和 (3)
D. (1)、(2) 和 (3)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一名男子的血型為A型,妻子的血型為AB型。他們的孩子可能出現甚麼血型?
A. 只有AB型
B. 只有A型和B型
C. 只有A型和AB型
D. 只有A型、B型和AB型
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
囊性纖維變性是由隱性等位基因引起的遺傳病。一名孩子患有囊性纖維變性,但父母雙方健康均屬正常。這對夫婦將要生育第二名孩子。這第二名孩子患囊性纖維變性的機會率是多少?
A. 100%
B. 75%
C. 50%
D. 25%
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下譜系顯示某性狀在一個家族中的遺傳。
這性狀的遺傳模式是甚麼?
A. 常染色體顯性遺傳
B. X連鎖顯性遺傳
C. X連鎖隱性遺傳
D. Y連鎖顯性遺傳
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