... of maize, and these components in the chromosome complement of dis- were designated “controlling elements.” tinct genetic components that control the Recently, however, controlling elements action of genes was available only from have been identified in ...

... at fixed po- sitions in the standard chromosome complement of maize, and they will be referred to in this dis- cussion as the genes. Modification of action of a known gene component can result from insertion of a controlling element ...

... and II, but also the determinants of certain components of the complement and alternative path- Table 3. Sometimes the Genes for a Receptor and Its Ligand(s) Are Syntenic ...

... region, including especially the assignment to it of genes controlling the second’, fourth i and eighth?? complement components and the Rodgers blood group®. The 6th Histocompatibility ...

... and insertion at other positions in the chromosome complement. 596. BARBARA McCLINTOCK In this two-unit system, it is the Ds component that is responsible, when inserted at the locus of a gene, for modification of the action of the gene; ...

... by an Spm located elsewhere in the chromosome complement. It also indicates that the transposition event does not modify the components of the Spm*; they remain unaltered after the event. The Component of Spm Responsible for Preset Patterns of Gene Expression To identify the component of Spm that ...

... Project, which will soon elucidate the complete genetic complement for many ... collect and catalog these genes and to assign them functions. As the home ...

... possible to recognize their presence in the chromosome complement and to ... If it is the gene- associated element that becomes fixed, the action of ...

... transposition from one siteto another in the chromosome complement, It was further learned that the mode of control of gene action was a reflection of the specificity 4 ne of operation of the individual components of a system and the interactions that occur ...

... transposition from one siteto another in the chromosome complement, It was further learned that the mode of control of gene action was a reflection of the specificity 4 ne of operation of the individual components of a system and the interactions that occur ...