The problem of DNA doubling can be solved by having a lineage on the cells of specialised organ.
Explanation:
The problem of DNA doubling can be solved by having a lineage on the cells of specialised organ which have half the number of chromosomes and half the amount of DNA. when gametes fuse at the time of sexual reproduction,to form a new organism,it results in the re-establishment of the number of chromosomes and DNA content in the new generation
