3、 异系繁殖(out breeding):即彼此没有血缘干系的搭配,若是两边都没有明明弱点(各方面),则此法孕育的子辈可精选成为舍中的基本犬,待长成之后再行他种要...
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out-breeding 远系繁殖
·2,447,543篇论文数据,部分数据来源于NoteExpress
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As the distance between their breeding grounds and their food grows, entire colonies could be wiped out.
随着它们的繁殖地和觅食地之间的距离越来越远,整个群落都可能会灭绝。
Those he uses have had some of their genes knocked out to stop them breeding in humans.
凯普使用的寄生虫有个特点,即寄生虫的基因被改性以避免它在人体上进行繁殖。
Helping us out is Ron Breeding.
NPR: Does Arkansas Still Heart Huckabee?
"I don't think we have ever had as intensive and difficult to put out fires this late in the breeding season, " she said.
BBC: Brecon Beacons' 'worst' grass fires in 30 years
Mr Jones said the wildlife trust's "toad patrol" of volunteers would once again be out on the road during the breeding season to help the animals and ensure the number does not drop any further.
BBC: Toad tunnel: Llandrindod Wells road shuts for mating
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