Occasionally during meiosis. a single homologous chromosome pair may fail to separate. a human gamete produced by such a nondisjunction could have a chromosome number of

Am certain that a human gamete produced by such a nodisjunction could have a chromosome number of 43. Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during cell division. There are three forms of nondisjunction: Failure of a pair of homologous chromosomes to separate during meiosis I, failure of sister chromatids to separate during meiosis II, and failure of sister chromatids to separate during mitosis.

The offspring will be blood type aa, bb, ab and oo or i