Meiotic nondisjunction and translocation segregation in dwarf (dw/dw) and control T(1;13)70H heterozygous mice.

Abstract excerpt

The meiotic behavior of translocation heterozygous T70 (1;13)H/+ male mice with a Snell dwarf (dw/dw) genotype was compared with that of nondwarf T70H/+ controls. A four-fold increase in the nondisjunction frequency of the normal bivalents occurred as a consequence of the dwarf genotype. This increase is identical to that seen in karyologically normal dwarf males. No effect of the dwarf condition on the...

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