进行有性生殖的生物体维持生物前后代体细胞中染色体数目恒定的生理过程是 A.染色体的复制和分离b.有丝分裂和减数分裂c.有丝分裂和受精作用 Template




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tomski进行有性生殖的生物体维持生物前后代体细胞中染色体数目恒定的生理过程是 a.染色体的复制和分离b.有丝分裂和减数分裂c.有丝分裂和受精作用 coloring