isogamy

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isogamy

The Columbia Encyclopedia, Sixth Edition | 2008 | The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press. (Hide copyright information) Copyright

isogamy , in biology, a condition in which the sexual cells, or gametes, are of the same form and size and are usually indistinguishable from each other. Many algae and some fungi have isogamous gametes. In most sexual reproduction, as in mammals for example, the ovum is quite larger and of different appearance than the sperm cell. This condition is called anisogamy.

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isogamy

A Dictionary of Zoology | 1999 | | © A Dictionary of Zoology 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

isogamy The fusion of gametes that are morphologically alike. This is an uncommon condition, found in some Protozoa.

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MICHAEL ALLABY. "isogamy." A Dictionary of Zoology. 1999. Encyclopedia.com. 11 Nov. 2009 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "isogamy." A Dictionary of Zoology. 1999. Encyclopedia.com. (November 11, 2009). http://www.encyclopedia.com/doc/1O8-isogamy.html

MICHAEL ALLABY. "isogamy." A Dictionary of Zoology. 1999. Retrieved November 11, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-isogamy.html

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isogamy

A Dictionary of Plant Sciences | 1998 | | © A Dictionary of Plant Sciences 1998, originally published by Oxford University Press 1998. (Hide copyright information) Copyright

isogamy The fusion of gametes that are morphologically alike. This is an uncommon condition, found in some green algae, fungi, and protozoa. Compare OOGAMY.

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MICHAEL ALLABY. "isogamy." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 11 Nov. 2009 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "isogamy." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (November 11, 2009). http://www.encyclopedia.com/doc/1O7-isogamy.html

MICHAEL ALLABY. "isogamy." A Dictionary of Plant Sciences. 1998. Retrieved November 11, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-isogamy.html

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Newspaper article from: Philadelphia Inquirer (Philadelphia, PA); 12/21/2006; ; 700+ words ; ...between male and female. Many organisms, including some fungi, algae and single-celled pond-swimmers, still practice isogamy. In doing so they offer clues to the mystery of why and how the sexes ever evolved. To understand life before the advent...
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