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人的卵细胞比精子大得多这是因为a卵细胞内含有更多的染色体b卵细胞为受精卵的�育提供营养物质c形成受精卵时卵细胞起主导作用d卵细胞中含有 Template






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tomski人的卵细胞比精子大得多这是因为a卵细胞内含有更多的染色体b卵细胞为受精卵的�育提供营养物质c形成受精卵时卵细胞起主导作用d卵细胞中含有 coloring
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