[討論] 生物解題
各位大師,
小妹做campbell biology 原文書第291第8題就卡關了...
題目如下:
What is the probability that each of the following pairs of parents will produce the indicated offsprings?
( assume independent assortment of all gene pairs)
A> AABBCC x aabbcc---> AbBbCc
解答說: 1x1x1=1 我以為要這樣 1x1x1x1x1x1= 1 兩邊不是各有三個嗎?怎麼只乘一組?
B > AABbCc x AaBbCc ----> AAbbCC
解答: 1/2 x 1/4x1/4 =1/32
這個真的想不出來.....
C> AaBbCc x AaBbCc-----> AaBbCc
解答: 1/2 x 1/2 x1/2= 1/8
我算得是 1/2 x 1/2 x 1/2 x 1/2 x 1/2 x 1/2= 1/64 (天哪><//)
D> aaBbCC x AABbcc -----> AaBbCc
解答: 1 x1/2x1 =1/2
這邊我不懂的是1是指 AA的話,另一個1是CC,那麼1/2是誰?
請各位高手解惑~~謝謝
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