History of Volvox

	Revision 8 . . (edit) October 13, 2001 7:32 am by Josh Grosse
	Revision 7 . . September 24, 2001 7:57 am by Josh Grosse [Quick and poorly written blurb on what Volvox is]
	Revision 6 . . August 20, 2001 1:54 pm by Josh Grosse [Please italicize genera! :)]

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Difference (from prior major revision) (minor diff, author diff)

Changed: 1c1

Volvox is one of the green algae.

Volvox is one of the best known green algae, and is the culmination of the evolution of spherical colonies. Each Volvox is composed of on the order of a thousand cells, each a biflagellate similar to Chlamydomonas?, interconnected and arranged in a hollow sphere, with a distinct anterior and posterior. All the cells are vegetative (i.e. do not reproduce) except for a few near the back, which develop into new colonies, initially with the flagella directed inwards and held within the parent. Eventually the parent bursts and the daughter colonies evert. Sexual reproduction is oogamous - one gender produces small motile gametes and the other non-motile gametes.

Changed: 7c7

Material of Volvox and all the Volvocaceae? may be fixed in the corrosive sublimate-acetic mixture, used hot-85° C. If material is to be stained and mounted whole, use the aqueous mixture; if it is to be imbedded and cut, use the alcoholic. For mounting whole, stain in iron-alum haematoxylin, or in Magdala red and anilin blue, following the Venetian turpentine method. A few bits of broken cover-glass, placed among the colonies, will prevent crushing.

Material of Volvox and all the Volvocales? may be fixed in the corrosive sublimate-acetic mixture, used hot-85° C. If material is to be stained and mounted whole, use the aqueous mixture; if it is to be imbedded and cut, use the alcoholic. For mounting whole, stain in iron-alum haematoxylin, or in Magdala red and anilin blue, following the Venetian turpentine method. A few bits of broken cover-glass, placed among the colonies, will prevent crushing.