To avoid inbreeding with the less adventurous males, female seals would travel up to 35 metres (yards) to find a fitter mate to give the next generation the best chance of surviving.
英
美
释义
为了避免亲近交配,为了给下一代最好的遗传基因,雌海狗会游到35米远的地方寻找更适合的配偶。
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