From Dorland's, 2000. a structure occurring in dividing cells, composed of microtubules radiating from a centrosome. Collins Dictionary of Biology, 3rd ed. Affinities 5. noun any composite plant of the genus Aster, having rays varying from white or pink to blue around a yellow disk. aster meaning: 1. a garden flower that is usually pink or purple, with many long, thin petals 2. a garden flower…. 73 terms. The aster function is uncertain, but does not seem to be concerned … a structure formed in a cell during mitosis, composed of astral rays radiating about the centrosome. Biology A star-shaped structure formed in the cytoplasm of a cell and having raylike fibers that surround the centrosome during mitosis. 1. The China aster. These fibres attach to the kinetichore of the chromosome during cell division and thus helps in … ăs'tər Any of various plants of the genus Aster or closely related genera in the composite family, having radiate flower heads with white, pink, or violet rays and usually a yellow disk. prefix denoting a star. 4. jacksonreeves15. a plant of some allied genus, as the China aster. Improper cleavage furrow formation in cytokinesis can produce cells with abnormal chromosome numbers, which can lead to the development of cancer cells or birth defects. Cleavage furrow formation and cytokinesis are essential for proper development of cells, tissues, and for proper development of an organism as a whole. ", How Asters Induce Cleavage Furrow Formation, Microtubules, the Structural Foundation of Your Cells, Role of a Kinetochore During Cell Division, What Is Nondisjunction? Aster definition is - any of various chiefly fall-blooming leafy-stemmed composite herbs (Aster and closely related genera) with often showy heads containing disk flowers or both disk and ray flowers. Asters are structures animal cells use during mitosis or meiosis, and the word aster comes from the Latin word for star. aster. These star-shaped structures form around each pair of centrioles during mitosis. The Aster is a unique daisy-like wildflower that’s known for its star-shaped flower head. A set of radiating microtubules extending outward from the cytocentrum and centrosphere of a dividing cell. 1. a flowering plant [n -S] Medical Definition of Aster. Distribution of Asteraceae 3. The achenes are flattened and smooth with a pappus of short, bristly hairs. 3. It is this contact with the cortex that induces the formation of a cleavage furrow. Aster meanings include love and wisdom. How to use aster in a sentence. Aster, a genus of flowering plants . Asters are radial microtubule arrays found in animal cells. These star-shaped structures form around each pair of centrioles during mitosis. Star shaped cluster of microtubules radiating from the polar microtubule organising centre at the start of mitosis. https://medical-dictionary.thefreedictionary.com/aster. 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Biology chapter 9 the cell cycle. Aster is a genus of perennial flowering plants in the family Asteraceae. Asters help to position cleavage furrows so that cytoplasmic division results in two evenly divided cells. biology 8. Asters are vital to the processes of mitosis and meiosis. Important Types. Cell Biology. Aster is a genus of perennial flowering plants in the family Asteraceae. Medical Definition of aster : a system of microtubules arranged in rays around a centriole at either end of the mitotic or meiotic spindle The first stage in the formation of the mitotic spindle in a typical animal cell is the appearance of microtubules in a "sunburst" arrangement, or aster, … Definition: Search for: Glossary - word Glossary - def Textbooks Protocols Images Tools Forum PubMed Links Press Releases Biology Glossary search by EverythingBio.com Tell a friend about us, add a link to this page, or visit the webmaster's page for free fun content. Noun. Aster definition: any plant of the genus Aster, having white, blue , purple , or pink daisy-like flowers:... | Meaning, pronunciation, translations and examples Asters are perennial … Plant Biology a plant of some allied genus, as the China aster. Dependable disasters Download this graphic from the Image library. Chapter 12-AP Biology. the opposite of a disaster in a feeling form. After this split there are about 180 species within the genus. aster: On-Line Biology Book: GLOSSARY [home, info] ASTER: A Dictionary of Quaternary Acronyms and Abbreviations [home, info] Slang (1 matching dictionary) Aster: Urban Dictionary [home, info] Tech (1 matching dictionary) ASTER: GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING [home, info] (Note: See asters for more definitions.) A radial array of short microtubules that extends from each centrosome toward the plasma membrane in an animal cell undergoing mitosis. The cell cortex is responsible for producing the contractile ring that constricts the cell and "pinches" it into two cells. 2). aster. The aster flower is a member of the larger Asteraceae family of flowering plants, which includes over 20,000 different species. 1. Biology. tbocage. a structure occurring in dividing cells, composed of microtubules radiating from a centrosome. An aster is a flower that's related to the daisy. Economic Importance 4. With a rich history in Greek mythology, it’s said that the aster was created by the tears of the Greek goddess, Astraea. 29 terms. (biology) A star-shaped structure formed during the mitosis of a cell. collegegirl85. ¹. ( botany ) A plant genus of the family Asteraceae ; the flower of this group. Learn more. They are long fibre like structures that give rise to the spindle Fibres. Chapter 12-AP Biology. Aster definition, any composite plant of the genus Aster, having rays varying from white or pink to blue around a yellow disk. 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