The cultivated peanut is an allotetraploid (AABB, 2n=4x=40) that carries the A genome from A. duranensis and the B genome from A. ipaensis . These two ancestral diploids separated from each other about 3 million years ago. The genome merger, allopolyploidy event, ocurred relatively very rec ...
如下的课程和中饭都是免费提供的,英语课程参加过一次,当时留了邮箱,每一段时间都有发。这种活动还是蛮不错的。 Winter is finally here. We are looking forward to getting back to our regular schedule this week. Here is what we have going on. Tuesday - Intermediate Level English Class f ...