Results 251 to 260 of about 402,124 (270)

Chromosome Numbers in Menispermaceæ

Nature, 1934
IN a recent communication to NATURE1, entitled, “Origin of the Angiosperms”, Dr. Anderson puts forward the interesting suggestion of the possible origin of modern flowering plants through the Magnoliales from wide crosses between different groups of Gymnosperms showing 12 and 7 as the base number of their chromosomes, such as the modern Ginkgoales ...
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Chromosome numbers in the proteaceae

Australian Journal of Botany, 1963
Chromosome numbers have been determined for 19 genera and 53 species of Proteaceae in Australia. The chromosomes are small in all genera except Persoonia n = 7, Placospermum n = 7 (Johnson and Briggs 1963) and Bellendena n = 5 (Venkata Rao 1957), which have chromosomes comparable in size with those in the Liliaceae and Ranunculaceae.
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Chromosome Morphology and Number

1998
• A karyotype describes the chromosome complement of an individual or species in terms of number, size, and morphology of its chromosomes. • Karyotypes can be based on mitotic or meiotic chromosomes and are enhanced by chromosome-banding techniques.
Cedric E. May, Rudi Appels, Bikram S. Gill, Rosalind Morris   +3 more
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Chromosome numbers in the Casuarinaceae

Australian Journal of Botany, 1959
Chromosome numbers of 37 species of Casuarina are reported, and found to conform with a suggested division of the genus into major species groups. The extra-Australian species groups are probably ancient, and are at the primary diploid level of the genus (x = 8 or 9).
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Variations in Chromosome Number

1987
The creation of new plant genotypes through gene recombination was discussed in the two preceding chapters. In the conventional breeding procedure, gene recombinations are obtained by hybridizing varieties, or species, with different agronomic characteristics, and then selecting in the segregating generations for the genotype, or genotypes, with the ...
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Chromosome Numbers in the Desmids

Nature, 1953
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The chromosome number of man

American Journal of Obstetrics and Gynecology, 1978
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Chromosome Numbers

Taxon, 1962
Th. Gadella, D. Love, A. Love
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Chromosome Numbers

Kew Bulletin, 1963
Askell, Keith Jones, Doris Love
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Chromosome Numbers in Capsicum

The American Naturalist, 1930
C. L. Huskins, L. La-Cour
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