C-bands in chromosomes 1,9, and 16 of twins

C-bands in chromosomes 1,9, and 16 of twins

Thirty-two pairs of Caucasoid twins, 16 monozygotic (MZ) and 16 dizygotic (DZ) of the same sex, were studied in relation to the C-bands of chromosomes 1, 9, and 16. Concordance was not absolute among MZ, the best evaluation of the degree of genetic determination for these traits being 0.40 for chrom...

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Veröffentlicht in:Human genetics 1978-01, Vol.45 (2), p.127-130
Hauptverfasser: Viégas, J, Salzano, F M
Format: Artikel
Sprache:eng
Schlagworte:
Adolescent
Adult
Azure Stains
Chromosome Banding
Chromosomes, Human, 1-3
Chromosomes, Human, 16-18
Chromosomes, Human, 6-12 and X
Female
Genetic Variation
Humans
Karyotyping
Male
Middle Aged
Pregnancy
Twins
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Zusammenfassung:Thirty-two pairs of Caucasoid twins, 16 monozygotic (MZ) and 16 dizygotic (DZ) of the same sex, were studied in relation to the C-bands of chromosomes 1, 9, and 16. Concordance was not absolute among MZ, the best evaluation of the degree of genetic determination for these traits being 0.40 for chromosome 16, 0.64 for chromosome 1, and 0.73 for chromosome 9. Possible explanations for the failure to obtain 100% concordance are methodologic shortcomings, intercell variations in chromosome contraction, and unequal mitotic crossing over.
ISSN:0340-6717
1432-1203
DOI:10.1007/BF00286955