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  Section: Genetics » Numerical Changes in Chromosomes
 
 
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Nullisomy

 
     
 
Content
Numerical Changes in Chromosomes
Aneuploidy 
Monosomy
Nullisomy
Trisomy
Tetrasomy
Euploidy 
Monoploidy and haploidy
Polyploidy

Nullisomics are those individuals, which lack a single pair of homologous chromosomes, so that the chromosome formula would be 2n - 2 and not 2n - 1 - 1, which would mean a double monosomic. Sears had isolated all the 21 nullisomics in wheat.


 
     
 
 
     




     
 
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