Results 211 to 220 of about 759,542 (265)
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Nature, 1960
CHROMOSOME numbers are becoming increasingly part of the taxonomic descriptions of animal and plant species.
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CHROMOSOME numbers are becoming increasingly part of the taxonomic descriptions of animal and plant species.
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Human Genetics, 1973
4 cases of “? chromosome abnormality”, referred to this department in the past 3 months, have shown an aberrant complement of chromosome 18. Chromosome 18 has been identified using a modification of Seabright's (1971) method of banding human chromosomes.
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4 cases of “? chromosome abnormality”, referred to this department in the past 3 months, have shown an aberrant complement of chromosome 18. Chromosome 18 has been identified using a modification of Seabright's (1971) method of banding human chromosomes.
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Genetica, 1959
1. SevenCrocus species collected in natural habitats have been examined for chromosome numbers, three of them for the first time. 2. An up-to-date list of 80Crocus species arranged in taxonomic groups (divisions, sections), according toMaw, is given as an addendum, and the available chromosome numbers are cited. 3.
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1. SevenCrocus species collected in natural habitats have been examined for chromosome numbers, three of them for the first time. 2. An up-to-date list of 80Crocus species arranged in taxonomic groups (divisions, sections), according toMaw, is given as an addendum, and the available chromosome numbers are cited. 3.
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CHROMOSOME NUMBERS IN THE MYRTACEAE
American Journal of Botany, 1947THE MYRTACEAE have received comparatively little cytological attention, partly because of technical difficulties, and partly because the majority of species are relatively far removed from the centers of intensive study. Cytology in its more recent developments has proved its value in clarifving some of the problems of phylogeny, and it appeared likely
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CHROMOSOME NUMBERS IN THE ANNONACEAE
American Journal of Botany, 1948which had induced them. When isolated from the normal stem tissue and grown in vitro, the induced tumors lost their characteristic structure and reverted to the structureless condition of the original tumor tissue. The theory is put forward that induced tumors may be composite structures into the make-up of which both normal and tumor tissue enter, the
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Chromosome Number and Chromosome Morphology in Helicophyllum crassipes
Nature, 1951Helicophyllum crassipes (Araceae)1 grows as a weed in the coastal belt of Egypt, in localities where the soil is light calcareous sand and where the percentage of salt is low. It is a corm-geophyte which sprouts late in October and flowers during January and February; flowering sometimes extends through March and April.
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Variation in the Human Chromosome Number
Nature, 1967INCREASED aneuploidy has been described in cultured human peripheral blood cells, beginning in the sixth decade of life for females, and in the seventh decade of life for males1. This increased aneuploidy has been attributed largely to the presence of cells containing forty-five chromosomes, with an XO sex chromosome constitution.
A D, Bloom, P G, Archer, A A, Awa
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A Chromosomal Break and Partial Delection of a Number 9 Chromosome
Human Heredity, 1973A male infant was observed with a complex of un usual clinical abnormalities. Chromosomal studies revealed that the child was mosaic for a chromosomal fragment from the long arms of a number 9 chromosome. The majority of cells contained 46 chromosomes with a partially deleted number 9 chromosome and a chromosomal fragment.
G F, Smith, S, Sachdeva, P, Justice
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Chromosome Numbers of Dominican Compositae
Brittonia, 1970Chromosome numbers of 34 species of Dominican Compositae in 26 genera and nine tribes are reported. First counts are given forCoreopsis buchii (2n = 64),Lagascea mollis (2n = 34),Spilanthes urens (n = 16),Liabum subacaule (n = 18),Eupatorium sciatraphes (2n = 40),Hieracium gronovii (2n = 18),Vernonia buxifolia (2n = 34),V.
Andrew M. Torres, Alain H. Liogier
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On the highest chromosome number in mammals
Cytogenetics and Cell Genetics, 2008The mitotic and meiotic chromosomes of the semi-aquatic rodent Ichthyomys pittieri (Rodentia, Cricetinae) from Venezuela were analyzed by means of conventional staining and several banding techniques. The diploid chromosome number of this rare species is 2n = 92, which is the highest value known for mammals.
M, Schmid +4 more
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