ascus
Americannoun
noun
Other Word Forms
Noun Inflected Forms
Etymology
Origin of ascus
1820–30; < New Latin < Greek askós bag, sac
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
In each ascus, two or more haploid ascospores fuse their nuclei in karyogamy.
From Textbooks ● Jan. 1, 2015
The zygote undergoes meiosis without cell division, resulting in an ascus with four 1n nuclei arranged in a row.
From Textbooks ● Jan. 1, 2015
A dikaryotic ascus that forms in the ascocarp undergoes karyogamy, meiosis, and mitosis to form eight ascospores.
From Textbooks ● Jan. 1, 2015
A classic ascus is sausage-shaped, like this one, which belongs to a tasty morel mushroom, a type of large ascomycete with a compound cup head.
From Scientific American ● Sep. 5, 2012
In the development of the ascus we find two nuclei at the base which fuse together to form the single nucleus of the young ascus.
From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" by Various
But some discomycetes — fungi that produce their asci in a cup-like structure in which the fertile surface is completely exposed to the environment — have learned to synchronize their firing.
From Scientific American ● Sep. 5, 2012
In the diagram above, you can see the asci at various stages in meiosis.
From Scientific American ● Sep. 5, 2012
Some asci have elastic rings at their tips that only allow spores out once a set pressured is reached.
From Scientific American ● Sep. 5, 2012
You can count the eight ascospores in this ascus: The tasty, tasty asci of a Morchella sp.
From Scientific American ● Sep. 5, 2012
The ordinary mycelium is the gametophyte since it bears the ascogonia and antheridia when present; the ascogenous hyphae with their asci represent the sporophyte since they are derived from the fertilized ascogonium.
From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" by Various
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
