Updated on 31.10.2016.
One of the main reasons for female gendercide is the concept of exclusive paternal lineage that is why people want to have sons. There is no scientific/genetic evidence in favour of exclusive paternal lineage. The contribution from the nuclear DNA comes equally from both the father and mother (50% each). This is 25% from the paternal grandfather (and maternal grandfather as well). If we trace back by 7 generations this contribution would be about only 0.78% from the paternal ancestor (and maternal ancestor).