BioScience Dictionary

 
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Found Nondisjunction 1 time.

Displaying results 1 to 10.

1. Nondisjunction
The failure of chromosomes to separate properly during cell division. The unequal segregation of chromosomes during meiosis . This forms cells with either too many (possibly one or more single or sets of chromosomes too many) or too few chromosomes. Thought to be a common cause for Down Syndrome, where sufferers often have an extra copy of chromosome 21.