The Y-chromosome, which carries the genes for maleness, comes from the father, so it cannot be the case that the mother is failing to ovulate “male” eggs.
携带男性基因Y-染色体来自于父亲，因此不可能是母亲无法排出“男性卵”。
The Y-chromosome, which carries the genes for maleness, comes from the father, so it cannot be the case that the mother is failing to ovulate "male" eggs.
携带男性基因的 Y 染色体来自于父亲，因此绝不可能是母亲没有排出“男孩卵”。
This molecule carries instructions from the genes telling a cell which proteins to make.
这种分子携带着基因上的指令，告诉细胞合成那类蛋白质。
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