2-1性狀的遺傳雙性雜交
Presentation
•
Biology
•
10th Grade
•
Practice Problem
•
Hard
東茂 葉
Used 4+ times
FREE Resource
27 Slides • 4 Questions
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Multiple Choice
決定豌豆種子性狀的等位基因：圓形(R)、皺皮(r)、黃色(Y)、綠色(y)。今將皺皮綠色豌豆植株與下列何種基因型之豌豆植株授粉，可產生全為皺皮黃色的豌豆？
rryy
rrYY
RRyy
RRYY
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Multiple Choice
關於豌豆基因的實驗，若以Y表示黃色等位基因，y表示綠色等位基因；R表示圓形等位基因，r表示皺皮等位基因，且大寫字母表示顯性等位基因。今有一顆黃色圓形豌豆發芽長成後的植株與一顆綠色皺皮豌豆長成的植株雜交後，得到的種子有一半是黃色圓形，另一半是綠色圓形。則下列何者是原來作為親代的黃色圓形豌豆的基因型？
YYRR
YyRR
YYRr
YyRr
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Multiple Choice
黃色圓滑種子之豌豆與黃色皺皮種子之豌豆植株相交配，產生的子代有4種表現型，則此兩親代之基因型何者最正確（以Y（黃色）─y（綠色）表示種子顏色之等位基因，以R（圓滑）─r（皺皮）表示種子形狀之等位基因）？
YyRr × Yyrr
YYRr × Yyrr
YyRr × yyrr
YyRR × YYrr
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Multiple Select
豌豆的種子形狀有圓形(R)和皺皮(r)，種子顏色有黃色(Y)和綠色(y)。現若有二豌豆親代，其基因型為YYrr和YyRr。下列相關敘述何者正確？（應選2項）
二個親代的表徵皆為圓形種子
親代最多產生4種不同基因型的配子
子代最多有6種基因型
子代基因型皆為同型合子的機率為1/8
子代表現型皆為顯性表徵的機率為 1/2
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