什么是一倍体每一个用两性生殖方法产生的有机体,都是由两个性细胞(或叫配子)结合而产生的。植物的雄配子叫做精核,雌配子叫做卵核;精核和卵核里因物种而异都含有固定数目的染色体。在受精的时候一个精核进入一个卵核,两个配子的细胞核相融合而成为新生命的第一个细胞核。卵核有一套染色体,是从母本来的。精核的一套染色体是从父本来的。这两套染色体是完全配好的,不仅数目一样,形状和大小也一样。 What is a diploid Each organism produced by sexual reproduction, are produced by the combination of two sex cells (or gametes). Plant male gametes are called sperm nuclei, female gametes are called egg nuclei; sperm nuclei and egg nuclei vary by species and contain a fixed number of chromosomes. During fertilization, a sperm nucleus enters an egg nucleus where the nuclei of both gametes fuse to become the first nucleus of new life. Egg nucleus has a set of chromosomes, is from the mother. A set of chromosomes of sperm nucleus is from the father. These two sets of chromosomes are perfectly matched, not just in number but also in shape and size.