问题
问答题 简答题
伴性遗传应用于养鸡生产有什么意义?
答案
参考答案:1.应用伴性遗传2.提高现代养鸡生产效率,降低生产成本。3.利用伴性遗传培育,自别雌雄的配套系。
伴性遗传应用于养鸡生产有什么意义?
参考答案:1.应用伴性遗传2.提高现代养鸡生产效率,降低生产成本。3.利用伴性遗传培育,自别雌雄的配套系。
“A friend walks in when the rest of the world walks out.” Sometimes in life, you find a special friend: someone who changes you life just by being part of it; someone who makes you laugh until you can’t stop; someone who convinces( 使相信 ) you that there really is an open door just waiting for you to open it. This is forever friendship. When you're sad, and the world seems dark and empty, your forever friend lifts you up in spirits and makes that dark and empty world suddenly seem bright and full; Your forever friend gets you through the hard times, the sad times, and the confused times.If you turn and walk away, your forever friend follows; If you lose your way, your forever friend guides you and cheers you on; Your forever friend holds your hand and tells you that everything is going to be ok. And if you find such a friend, you feel happy because you need not worry. You have a forever friend for life and forever has no end.
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