is the process by which the entire genome of a single speci

___ is the process by which the entire genome of a single species is increased due to the fertilization of diplaid gametes.

Solution

The term is reffered as Paleoploidy where entire genome gets duplicated some time in the evolutionary past, such an event lead to either duplication of genome of single species or combine the genome of two species and because of functional inactivity these duplicated genes are either silenced or they are lost from the organism\'s genome.The process by which they lost the polyploidy status is termed as Diploidization.

Most paeleoploids have lost their polyploidy status and are currently considered diploids.

Paeleoploidy has been extensively studied in plant lineages,it has been found that almost all flowering plants have undergone gene duplication at some point during their evolutionary history and studies have also confirmed the process of gene duplication in Saccharomyces cerevisiae, well known as Baker\'s yeast.