Which of the following best defines nondisjunction? A.loss of a piece of a chromosome B.repetitive replications of the same piece of a chromosome
C.failure of chromosome pairs to sparate D.complete exchange of chromosome pieces
C. failure of chromosome pairs to separate The failure of paired chromosomes or sister chromatids to separate and go to different cells during meiosis. As a result, one daughter cell has two chromosomes or two chromatids, and the other has none.
