Search Results - "Wyngaard, Grace A"

Throwing away DNA: programmed downsizing in somatic nuclei by Drotos, Katherine H.I., Zagoskin, Maxim V., Kess, Tony, Gregory, T. Ryan, Wyngaard, Grace A.

“…Programmed elimination of DNA during development yields somatic cell nuclei with dramatically different DNA sequence and content relative to germline nuclei,…”
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The salmon louse genome may be much larger than sequencing suggests by Wyngaard, Grace A., Skern-Mauritzen, Rasmus, Malde, Ketil, Prendergast, Rachel, Peruzzi, Stefano

“…The genome size of organisms impacts their evolution and biology and is often assumed to be characteristic of a species. Here we present the first published…”
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Observing copepods through a genomic lens by Bron, James E, Frisch, Dagmar, Goetze, Erica, Johnson, Stewart C, Lee, Carol Eunmi, Wyngaard, Grace A

“…Copepods outnumber every other multicellular animal group. They are critical components of the world's freshwater and marine ecosystems, sensitive indicators…”
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Embryonic development and a quantitative model of programmed DNA elimination in Mesocyclops edax (S. A. Forbes, 1891) (Copepoda: Cyclopoida) by Clower, Michelle K, Holub, Ashton S, Smith, Rebecca T, Wyngaard, Grace A

“…The highly programmed fragmentation of chromosomes and elimination of large amounts of nuclear DNA from the presomatic cell lineages (i.e., chromatin…”
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Towards a phylogeny of Cyclops (Copepoda): (in)congruences among morphology, molecules and zoogeography by Hołyńska, Maria, Wyngaard, Grace A.

“…The phylogeny of Cyclops (~30 spp.), a predominantly Palearctic cold‐adapted genus, was reconstructed based on morphological and molecular characters. The…”
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Genome size in cyclopoid copepods (Copepoda: Cyclopoida): chromatin diminution as a hypothesized mechanism of evolutionary constraint by Schutt, Emilly, Hołyńska, Maria, Wyngaard, Grace A

“…Abstract Genome size is a fundamental property of organisms that impacts their molecular evolution and life histories. The hypothesis that somatic genome sizes…”
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Phylogeny of the freshwater copepod Mesocyclops (Crustacea: Cyclopidae) based on combined molecular and morphological data, with notes on biogeography by Wyngaard, Grace A., Hołyńska, Maria, Schulte, James A.

“…We combined molecular and morphological characters in a copepod taxon for which obtaining a sufficiently high number of characters that evolve at different…”
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DNA-Feulgen cytophotometric determination of genome size for the freshwater-invading copepod Eurytemora affinis by Rasch, Ellen M, Lee, Carol Eunmi, Wyngaard, Grace A

“…Variation in nuclear DNA content within some eukaryotic species is well documented, but causes and consequences of such variation remain unclear. Here we…”
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Unusual augmentation of germline genome size in Cyclops kolensis (Crustacea, Copepoda): further evidence in support of a revised model of chromatin diminution by Wyngaard, Grace A, Rasch, Ellen M, Connelly, Barbara A

“…Embryonic chromatin diminution, the selective excision of large amounts of heterochromatic DNA from presomatic cell lineages, provides an example of an…”
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Evidence for Endoreduplication: Germ Cell DNA Levels Prior to Chromatin Diminution in Mesocyclops edax by Rasch, Ellen M, Wyngaard, Grace A

“…We studied the functional significance of marked differences in the DNA content of somatic cells and germ line nuclei by static Feulgen–DNA cytophotometry for…”
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The relationship between genome size, development rate, and body size in copepods by WYNGAARD, Grace A, RASCH, Ellen M, MANNING, Nicole M, GASSER, Kathryn, DOMANGUE, Rickie

“…Freshwater cyclopoid copepods exhibit at least a fivefold range in somatic genome size and a mechanism, chromatin diminution, which could account for much of…”
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Genome sizes of cyclopoid copepods (Crustacea): evidence of evolutionary constraint by RASCH, ELLEN M., WYNGAARD, GRACE A.

“…Genome sizes for 36 species of cyclopoid copepods were determined by DNA‐Feulgen cytophotometry of nuclei from adults collected from diverse habitats and…”
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Heterochromatin endoreduplication prior to gametogenesis and chromatin diminution during early embryogenesis in Mesocyclops edax (Copepoda: Crustacea) by Rasch, Ellen M., Wyngaard, Grace A., Connelly, Barbara A.

“…The segregation of progenitor somatic cells from those of the primordial germ cells that sequester and retain elevated levels of DNA during subsequent…”
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Endopolyploidy in Cyclopoid Copepods by Rasch, Ellen M, Wyngaard, Grace A

“…Abstract Somatic tissues in mature copepods are determinate in growth, not undergoing mitosis; cell number remains constant throughout adult life. Here we…”
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GONOMERY AND CHROMATIN DIMINUTION IN MESOCYCLOPS LONGISETUS (COPEPODA) by Rasch, Ellen M, Wyngaard, Grace A

“…The segregation of progenitor somatic cells from those of the primordial germ cells during early cleavage divisions occurs in certain copepods exhibiting the…”
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GENETIC ARCHITECTURE OF THE CRYPTIC SPECIES COMPLEX OF ACANTHOCYCLOPS VERNALIS (CRUSTACEA: COPEPODA). II. CROSSBREEDING EXPERIMENTS, CYTOGENETICS, AND A MODEL OF CHROMOSOMAL EVOLUTION by Grishanin, Andrey K, Rasch, Ellen M, Dodson, Stanley I, Wyngaard, Grace A

“…Collectively, populations of Acanthocyclops vernalis, a species complex of freshwater copepods, are remarkably similar as to morphology and DNA content,…”
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Endopolyploidy in Cyclopoid Copepods by Rasch, Ellen M, Wyngaard, Grace A

“…Somatic tissues in mature copepods are determinate in growth, not undergoing mitosis; cell number remains constant throughout adult life. Here we report…”
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Morphological analysis of some cryptic species in the Acanthocyclops vernalis species complex from North America by Dodson, Stanley I., Grishanin, Andrey. K., Gross, Kevin, Wyngaard, Grace A.

“…Issue Title: Aquatic Biodiversity Patterns of morphological variation and reproductive isolation were examined for several North American populations of…”
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Changes in nuclear morphology associated with elevated DNA levels during gametogenesis in cyclopoid copepods with chromatin diminution by Rasch, Ellen M., Wyngaard, Grace A.

“…Most species of freshwater cyclopoid copepods follow a conventional course of DNA replication during gametogenesis, but certain species regularly undergo…”
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VARIABILITY IN GENETIC ARCHITECTURE OF THE CRYPTIC SPECIES COMPLEX OF ACANTHOCYCLOPS VERNALIS (COPEPODA). I. EVIDENCE FROM KARYOTYPES, GENOME SIZE, AND RIBOSOMAL DNA SEQUENCES by Grishanin, Andrey K, Rasch, Ellen M, Dodson, Stanley I, Wyngaard, Grace A

“…Populations of the North American cryptic species complex of Acanthocylops vernalis (Fischer 1853) (Copepoda) possess unusually variable karyotypes and levels…”
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