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"Meiosis and Nondisjunction"

A M Chiavarino, M González-Sánchez, L Poggio, M J Puertas, M Rosato, P Rosi
In previous work, genotypes for high and low B chromosome transmission rate were selected from a native race of maize. It was demonstrated that the B transmission is genetically controlled. The present work reports the fourth and fifth generations of selection and the F1 hybrids between the lines. The native B is characterized by a constant behaviour, with normal meiosis and nondisjunction in 100% of postmeiotic mitosis. It is concluded that genetic variation for B transmission between the selected lines is due to the preferential fertilization process...
June 2001: Heredity
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