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is maize b chromosome preferential fertilization controlled by a single gene?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 selec ...200111595055
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