Sexual reproduction can bring about genetic commingling . 有性繁殖可取得雜交遺傳。
Why , therefore , bother with the whole messy business in the first place 那為什么還要那么麻煩地去做有性繁殖呢?
On top of that , the need for each individual to have two parents means the population can grow only half as rapidly as it otherwise might 再加上,每一個體都有雙親這一現實情況表明了有性繁殖比無性繁殖的人口增長速度慢一倍。
And vice chairman of the nbb ningxia biology board , has spent ten years on this technique . this technique made important breakthroughs both to the plant tissue culture technique and to the conventional seedling techniques 人類從古至今在開發利用經濟植物的歷程中,除了利用種子有性繁殖技術以外,曾不倦地對植物無性繁殖技術進行了許多探索和創新。