Sunday, September 11, 2022
问题:许多水产养殖的无脊椎动物的多产性比任何陆生脊椎动物都大得多。...
Thursday, December 29, 2022
Wednesday, March 1, 2023
Sunday, September 11, 2022
问题:杂交育种不包含()。A、自由交配B、种内杂交C、种间杂交D、地理杂交...
Friday, April 21, 2023
Saturday, March 4, 2023
问题:根据当地的自然条件、生产需要和原有地方品种的品质等客观条件而确定的改造某一地方品种或品系而进行的育种活动称为()。A、简单育成杂交B、级近育成杂交C、引入育成杂交D、综合育成杂交...
Monday, December 25, 2023
Friday, April 21, 2023
Tuesday, September 19, 2023
问题:注入鱼类受精卵的外源DNA在胚胎发育过程中经历复制扩增、到原肠期后逐渐降解或丢失,大多数外源DNA能整合到受体细胞的基因组。...
Wednesday, December 27, 2023
Sunday, April 23, 2023
Wednesday, October 25, 2023
Monday, October 9, 2023
Saturday, June 3, 2023
Thursday, July 13, 2023
Tuesday, September 19, 2023
问题:注入鱼类受精卵的外源DNA在胚胎发育过程中经历复制扩增、到原肠期后逐渐降解或丢失,大多数外源DNA能整合到受体细胞的基因组。...
Thursday, December 15, 2022
问题:水产动物养殖种类遗传多样性的研究、保护与利用要注意哪些方面的问题?...
Monday, March 11, 2024
Friday, April 21, 2023
Sunday, September 11, 2022