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Does a hen need a rooster around to lay eggs? ... I don't understand the purpose of the rooster and whether the eggs we eat are fertilized. My mom thought that the eggs were fertilized by the rooster pecking the top of the hen's head. She saw this happen frequently on the farm as a girl.
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www.angelfire.com/oh/ZebraDirectory/faq.html
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The fallopian tube extends from the uterus to the ovary. This tube carries eggs and sperm and is where fertilization of the egg, or 'ovum' takes place. ... See Also: Uterus Ovary and Egg Fertilization | Female Midsagittal Section | Cell Stage to Fetus | Fetus | Fetus 1st Trimester | Did you know?
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www.innerbody.com/image/repo04.html
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Copulation and Fertilization ... eggs that contain food. ... manufacture eggs...
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users.rcn.com/jkimball.ma.ultranet/BiologyPages/S/Sexua...
users.rcn.com/jkimball.ma.ultranet/BiologyPages/S/Sexual_Reproduction.html
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Both the inositol 1,4,5-trisphosphate (InsP(3)) and ryanodine receptor pathways contribute to the Ca(2+) transient at fertilization in sea urchin eggs. ... This effect is mirrored by the inhibition of cGMP and cADPR signaling in sea urchin eggs at fertilization. We establish that cADPR is generated at fertilization,
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www.medscape.com/medline/abstract/12540836
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Previous results, based on inhibition of fertilization by an anti-alpha6 integrin mAb (GoH3), suggest that the alpha6beta1 integrin on mouse eggs functions as the receptor for sperm (Almeida, E. ... 287:321-324). Using eggs from cultured ovaries of mice lacking the alpha6 integrin subunit, we found that the fertilization rate,
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www.medscape.com/medline/abstract/10851025
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Wild birds may rest for months before laying more eggs, but domestic hens, specially bred for abundant egg production, may rest for as little as 1 day between egg-laying periods." ... eggs that have been in the fridge and that are fertile will hatch, I was given some eggs that had spent a few days only in the fridge and...
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www.sciencebuzz.org/blog/the_chicken_and_the_egg
www.sciencebuzz.org/blog/the_chicken_and_the_egg
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IVF lab pictures of fertilized human eggs, also called zygotes are shown. The pronuclei of the embryo are what we look for to confirm normal fertilization. ... Human Fertilization; Fertilized human egg pictures from IVF ... Use Donor Eggs: Local...
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www.advancedfertility.com/zygotes1.htm
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Fertilization occurs when sexual intercourse allows sperm to travel through the female's vagina through the cervix and the uterus to meet the mature egg. Although males can release 200-300 million sperm, it only takes one to penetrate the egg.
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home.moravian.edu/students/O/stjno01/fertilization_proc...
home.moravian.edu/students/O/stjno01/fertilization_process.htm
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But exactly like mammals and reptiles, birds need to have sex in order to get offspring (not like salmon, which fertilize the eggs after they're laid). For a bird, there's no way to fertilize an egg after it's been laid. ... This is called internal fertilization.
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answers.yahoo.com/question/index?qid=20061011234326AAOv...
answers.yahoo.com/question/index?qid=20061011234326AAOvGzp
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