 The question is: why?Because both the quality of the eggs and the quality of the sperm decrease with age,[url="https://www.jp-dolls.com/category/c36.html"]ダッチワイフ エロ[/url]it is tempting to explain the declining likelihood of having a son among older parents potentially in terms of such quality of gametes (although I’m not aware of any argument that suggests that lower-quality gametes are more likely to produce girls).