<P> In a study around 2002 , the natural sex ratio at birth was estimated to be close to 1.06 males / female . Some scholars suggest that countries considered to have significant practices of prenatal sex - selection are those with birth sex ratios of 108 and above ( selection against females ) and 102 and below ( selection against males ) . This assumption has been questioned by some scholars . </P>
<P> In a study around 2002 , the natural sex ratio at birth was estimated to be close to 1.06 males / female . Some scholars suggest that countries considered to have significant practices of prenatal sex - selection are those with birth sex ratios of 108 and above ( selection against females ) and 102 and below ( selection against males ) . This assumption has been questioned by some scholars . </P>
ratio of girl and boy in world 2017
ratio of girl and boy in world 2017
1.06 males / female
1.06 males / female