Sex ratio is the ratio of males to females in a population. The primary sex ratio is the ratio at the time of conception, secondary sex ratio is the ratio at time of birth, and tertiary sex ratio is the ratio of mature organisms.
In a ca. 2002 study, the natural sex ratio atbirth was estimated to be close to 1.06males/female. In most societies, adult malestend to have higher death rates due to naturaland violent causes, such as homicide andwarfare, than adult females (for example, inthe USA as of 2006, an adult non-elderly maleis 3 to 6 times more likely to become a victimof a homicide and 2.5 to 3.5 times more likelyto die in an accident than a female of the sameage).
Country Sex RatioIndia 933China 944USA 1029Indonesia 1004Brazil 1025Pakistan 938Bangladesh 951Japan 1041Russian Fed. 1140Source:World Pop. Prospects, mid year estimates, 1998
Year No. of Females1901 9721911 9641921 9551931 9501941 9451951 9461961 9411971 9301981 9341991 9272001 933
Sex Ratio (Females per 1000 males) Total Child population Population aged 7 Population in the age group and above 0-6 1991 2001 1991 2001 1991 2001India 927 933 945 927 923 935Rajasthan 910 922 916 909 908 925
Reasons : Caste system Economic oppressions Denial of right to property False sense of impurity. Deprivation of educationFEMALE FOETICIDE : THE EVIL IN INDIA
FEMALE FOETICIDE : THE EVIL IN INDIA “It is an extreme manifestation of violence against women.” Female fetuses areselectively aborted after pre-natal sex determination.