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  4. Maize has ten pairs of chromosomes. How many linkage groups will be present, if all the genes are mapped?

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Q. Maize has ten pairs of chromosomes. How many linkage groups will be present, if all the genes are mapped?

AIIMSAIIMS 1994Principles of Inheritance and Variation

Solution:

The number of linkage groups present in an individual corresponds to number of chromosomes in its one genome (all the chromosomes if haploid or homologous pairs if diploid). It is known as principle of limitation of linkage groups. Maize has 10 linkage groups, as it has 10 pairs of chromosomes.