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zygote

[zahy-goht, zig-oht]

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noun Biology.

the cell produced by the union of two gametes, before it undergoes cleavage.

Origin:
1885–90; < Greek zygōtós yoked, equivalent to zygō-, variant stem of zygoûn to yoke, join together (derivative of zygón yoke¹) + -tos adj. suffix

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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To zygote

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Zygote is always a great word to know.

So is duplication of dna. Does it mean:

occurrence of a chromosomal segment more than twice in a diploid cell or organism

Y-shaped part of a chromosome that is the site for DNA strand separation and then duplication

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Example Sentences

Let us not forget that a zygote or an embryo is real human life by another name.

In their entire lives, from zygote to now, they've only spend a couple of nights apart.

The adaptive immune system is not operating in a zygote.

Collins

World English Dictionary

zygote (ˈzaɪɡəʊt, ˈzɪɡ-)

—n
1.	the cell resulting from the union of an ovum and a spermatozoon
2.	the organism that develops from such a cell

[C19: from Greek zugōtos yoked, from zugoun to yoke]

zygotic

—*adj*

zy'gotically

—*adv*

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline

Word Origin & History

zygote

1891, from Gk. zygotos "yoked," from zygon "yoke" (see jugular).

Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage

Medical Dictionary

zygote zy·gote (zī'gōt')
n.

The cell formed by the union of two gametes, especially a fertilized ovum before cleavage.
The organism that develops from a zygote.

zy·got'ic (-gŏt'ĭk) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage

Science Dictionary

zygote (zī'gōt') Pronunciation Key
The cell formed by the union of the nuclei of two reproductive cells (gametes), especially a fertilized egg cell.

American Heritage

Cultural Dictionary

zygote [(zeye-goht)]

The single cell that results from fertilization of an ovum by a sperm. After dividing several times, it implants in the uterus. It continues to divide, producing more cells and passing through the stages of embryo and fetus.

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pronucleus sexual generation sporogony sporont zygogenesis

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