Results 181 to 190 of about 3,514 (209)

The Karyology of Ophidians: A Review

Transactions of the Kansas Academy of Science (1903-), 1971
Comparatively few studies relate strictly to karyological investigations of ophidians. We are aware of but 25 published articles reporting on 102 species or subspecies of ophidians belonging to nine different families, the family Colubridae representing the bulk of these.
L A, Trinco, H M, Smith
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Karyological Study of Honeybee

Journal of Apicultural Research, 1978
SummaryThe karyotype of Apis mellifera is illustrated and described, using mitotic chromosomes. The chromosome complement in the haploid male (n 16) could be divided into the two groups: 8 metacentrics and 8 submetacentrics. The longest metaphase chromosome was about 4·3 μm long, and the shortest 1·3 μm, after in vitro pretreatment with colchicine. The
Hidehiro Hoshiba, Akio Kusanagi
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KARYOLOGICAL RELATIONSHIPS IN TURTLES (REPTILIA: CHELONIA)

Canadian Journal of Genetics and Cytology, 1972
The mitotic chromosomes of 33 species of chelonians representing 22 genera and six families were investigated. Chromosome number and morphology are the same for most members of a given family and range from 66 in Trionyx to 34 in Pelomedusa. Most emydid genera have 50 chromosomes.
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Karyological studies on two HeLa lines

Zeitschrift f�r Krebsforschung, 1970
Two HeLa cell lines grown under different conditions were studied karyologically. The “monolayer” line was found to posses a stemline chromosome number of 69 (but not typically triploid in chromosomal characteristics), whereas the “clot” line had 74 chromosomes in its stemline cells.
I, Ghosh, S, Ghosh
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Karyology and Genome Structure

2015
The grasses, and in particular the cereals, have long been investigated as models for studies of chromosome number, morphology, dynamics, and evolution (e.g., Avdulov 1931; Stebbins 1956). The number of chromosomes varies from 2n = 4 in species of Zingeria and Colpodium (Kim et al. 2009) to 2n = ca. 266 in Poa litorosa (Hair and Beuzenberg 1961). Based
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Karyology: vaccine manufacturers' views.

Developments in biological standardization, 1978
Chromosomal analyses and life span studies of WI-38 cell cultures used for vaccine production at the Connaught Laboratories Ltd will be described. Twenty cultures derived from the same seed lot and 25 cultures derived from different starter cultures were analyzed. Karyology tests at population doublings 31 and higher were within acceptable limits.
A, von Seefried, M J, Walton, H G, MacMorine   +2 more
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Karyological heterogeneity in the Falconiformes (aves)

Experientia, 1975
Chromosome studies in 4 families of Falconiformes, Cathartidae, Falconidae, Sagittariidae and Accipitridae showed that the karyological variety in this order is much wider than in any other avian order, which underlines the heterogeneous character of the group.
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Anatomy, Embryology, And Karyology

2007
The description of bud development presented here is based primarily on the findings of Hejnowicz and Obarska (1995) and related studies. The embryonic shoots of vegetative and reproductive buds are visibly easy to differentiate in winter. With the aid of a microscope, it is possible to differentiate between bud types some months earlier.
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Karyological studies inCrocus V

Genetica, 1962
Karyological observations were made in fourteenCrocus including various Linnean species and garden varieties.C. biflorus Weldenii albus was an autotetraploid with five tetravalents,C. nudiflorus being also an autotetraploid having eleven tetravalents.
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karyology, n.

2023
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