NEET Questions Solved

NEET - 2016

The mechanism that causes a gene to move from one linkage group to another is called 

(1) inversion

(2) duplication

(3) translocation

(4) crossing-over

(3) Translocation is the process causing a gene to move from one linkage group to another. It is the separation of a chromosome segment and its union to a non-homologous chromosome. It is of two types - Simple and  reciprocal.

In simple translocation one chromosome shows deletion of deficiency while a non-homologous chromosome comes to have an additional segment. In reciprocal translocation two non-homologous chromosomes exchange segments between themselves to create new linkage groups in both the chromosomes. 

Hence, option (3) is correct.

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