DOWN SYNDROME. non-disjunction - the failure of homologs or sister chromatids to separate properly to opposite poles during meiosis or mitosis aneuploidy.
Yeast cell cycle landmarks. Isolation of temperature sensitive mutants 1500 ts mutants 146 Cdc- phenotype 32 cdc complementation groups.
Chromosome Aberrations. Types of Genetic variation Allelic variations mutations in particular genes (loci) Chromosomal aberrations substantial changes.
