Examlex
A ________ is a common name for a condition caused by distortion of an intervertebral disc.
Nondisjunction
Failure of the homologous chromosomes or sister chromatids to separate during either mitosis or meiosis; produces cells with abnormal chromosome numbers.
Homologous Chromosomes
Pair of chromosomes that have the same gene sequences, each derived from one parent.
Meiosis
A type of cell division that reduces the chromosome number by half, resulting in the production of gametes or spores in sexually reproducing organisms.
Sex Chromosomes
Chromosomes that differ between the sexes; in humans, these represent the X and Y chromosomes.