| Y chromosome |
A sex chromosome that when present is found in one copy in the heterogametic sex, along with an X chromosome, and is not present in the homogametic sex. Not all organisms with sex chromosomes have aY chromosome.
출처: www.modernhumanorigins.com/y.html
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| yoke |
1. Brace clamped around a form when a concrete column is being poured. Metal mounting strap on an electrical receptacle. 2. Also called a head jamb, it's the upper horizontal finish member in a window frame.
출처: www.peakagents.ca/glossary/y1.htm
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| yolk sac |
a membrane-bound compartment in the amniotic egg which contains stored food for the developing embryo.
출처: www.palaeos.com/Vertebrates/Lists/Glossary/Glossar...
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| yellow fever |
A viral disease occuring in central Africa and central and south America, spread by mosquitoes. Fever and headache after a 48 hours incubation period are mild symptoms, but the disease can be severe, including nausea, vominting and constipation. Only symptomatic supportive therapy is available.
출처: www.gastrolab.net/dictey.htm
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| Yersinia |
A group of gram-negative anaerobic rod-shaped bacterias belonging to the Enterobacteriaceae-family. To this bacteria genus belongs Yersinia pestis, the bacteria causing plague, and Yersinia enterocolitica and Yersinia pseudotuberculosis, bacterias causing acute bowel infections in humans.
출처: www.gastrolab.net/dictey.htm
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