統計顯示，近親通婚較容易產下具有遺傳性疾病的胎兒，其原因是? (A)血緣太近導致胎兒基因突變的機率上升 (B)親緣關係近，會使精卵結合時互相排斥，導致胚胎發育異常(C)可能雙方都具有相同的突變等

問題詳情

2. 統計顯示，近親通婚較容易產下具有遺傳性疾病的胎兒，其原因是?
(A)血緣太近導致胎兒基因突變的機率上升
(B)親緣關係近，會使精卵結合時互相排斥，導致胚胎發育異常
(C)可能雙方都具有相同的突變等位基因，容易導致胎兒異常
(D)近親通婚容易使顯性的等位基因突變成隱性等位基因

參考答案

答案：C
難度：計算中-1
書單：沒有書單，新增

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