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

✍ Scribed by Judith Viégas; F. M. Salzano

Publisher
Springer
Year
1978
Tongue
English
Weight
248 KB
Volume
45
Category
Article
ISSN
0340-6717

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✦ Synopsis

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.

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