112學測複習全2

Quiz
•
Biology
•
12th Grade
•
Medium
葉東茂 葉東茂
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39 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2.
MULTIPLE CHOICE QUESTION
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3.
MULTIPLE CHOICE QUESTION
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4.
MULTIPLE CHOICE QUESTION
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5.
MULTIPLE CHOICE QUESTION
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甲為單基因遺傳、乙為多基因遺傳
甲為單基因遺傳、乙為中間型遺傳
甲為中間型遺傳、乙為多基因遺傳
甲為多基因遺傳、乙為中間型遺傳
甲為二基因遺傳、乙為三基因遺傳
Answer explanation
解答 B
解析 根據題幹說明:異型合子(H)經雜交(即H × H)試驗,可以假設H基因型為Aa,則Aa × Aa可得AA:Aa:aa = 1:2:1。甲圖中只有兩種表現型,相對頻率I:III = 3:1;乙圖中有三種表現型,相對頻率I:II:III = 1:2:1。根據孟德爾遺傳法則,雜交實驗中若子代表現型為3:1,則為單基因之顯隱性遺傳。然而,乙圖中的表現型為1:2:1,兩個等位基因無顯隱性之分,為中間型遺傳。多基因遺傳,其子代的表現型會呈連續差異,在族群中大多呈現鐘形的常態分布
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
7.
MULTIPLE CHOICE QUESTION
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