[生物] 台大普生(A)96年

看板TransBioChem作者 (三景)時間18年前 (2007/11/26 20:07), 編輯推噓2(2推 0噓 9→)
留言11則, 1人參與, 最新討論串1/1
下列何種情況下,來自S1S2植物的花粉可對S2S3的花成功的完成授粉? (A)If you used pollen from a carpelate flower,to fertilize a staminate flower,it would be successful. (B)If the plants used sporophytic self-incompatibility,half of the pollen would be successful. (C)If the plants used gametophytic self-incompatibility,half of the pollen would be successful. (D)Pollen from an S1S2 plant can never pollinate an S2S3 flower. 請幫忙解答一下,謝謝!!!感激不盡!!! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 192.192.131.235
推
11/28 13:30, , 1F
(C)
11/28 13:30, 1F
推
11/28 13:33, , 2F
In gametophytic self-incompatibility
11/28 13:33, 2F
→
11/28 13:34, , 3F
it depends on the haploid S locus of
11/28 13:34, 3F
→
11/28 13:34, , 4F
the pollen and the diploid S locus of
11/28 13:34, 4F
→
11/28 13:34, , 5F
the stigma ; In sporophytic
11/28 13:34, 5F
→
11/28 13:35, , 6F
self-incompatibility, both S alleles
11/28 13:35, 6F
→
11/28 13:36, , 7F
of the pollen parent are important
11/28 13:36, 7F
→
11/28 13:37, , 8F
So, in (C) , if pollen S1 ==> S2,S3
11/28 13:37, 8F
→
11/28 13:38, , 9F
stigma, it will grow ; but if pollen
11/28 13:38, 9F
→
11/28 13:39, , 10F
S2 ==> S2,S3 stigma, it will not.
11/28 13:39, 10F
→
11/28 13:39, , 11F
because both S2 alleles match
11/28 13:39, 11F
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