And this is relevant for a different sort of competition, which regards the impregnation of females that have multiple mates.

这种竞争有关，即有多个配偶雌性受孕。

But after all, the cause more probably lies in some imperfection in the original act of impregnation, causing the embryo to be imperfectly developed, rather than in the conditions to which it is subsequently exposed.

但归根结底， 原因更可能在于最初受孕过程些缺陷，导致胚胎发育不完善， 而不是在于随后暴露条件。