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Sometimes the copy from mother or father is silenced, and only the copy from one parent is active. If the only active gene is damaged, it can show up in the form of genetic disease. An example of genomic imprinting, is the mixing of tigers and lions.Who the mother is, has direct effect on the offspring. A mother tiger and a father lion, results in a liger. Ligers are much bigger than either parent. A mother lion and a father tiger, results in a tigon.ometimes the copy from mother or father is silenced, and only the copy from one parent is active. If the only active gene is damaged, it can show up in the form of genetic disease. An example of genomic imprinting, is the mixing of tigers and lions.
However, it is thought that between each generation the epigenetic marks are erased in cells called primordial gene cells (PGC), the precursors to sperm and eggs. This âreprogrammingâ allows all genes to be read afresh for each new person â leaving scientists to question how epigenetic inheritance could occur. The new Cambridge study initially discovered how the DNA methylation marks are erased in PGCs, a question that has been under intense investigation over the past ten years.