In the world today, 49% of the population is men and 51% is women. The reason for this difference is women live longer; therefore more elderly women then men. I believe women live longer because so many die off naturally because of childbirth.
the difference in the sex ratios across india,in different states...!!
Sex ratio denotes 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 adult human beings. According to CIA estimates the current world sex ratio at birth is 107 boys to 100 girls. In 2010 the global sex ratio was 986 females to 1000 males, which got further reduced to 984 females to 1000 males in 2011.
Unbalanced relation,
India
Sex ratio is ratio of males to females in a population.
The country with the lowest sex ratio in the world is United Arab Emirates, where there are more males than females due to high numbers of male expatriate workers.
23 chromosomes for every 1 sex cell??
The low sex ratio is a problem. It is due to unwanted girl child.
As per Census 2011, Sex ratio of Kerala is 1084. [1084 females per 1000 males]
In humans the secondary sex ratio is commonly assumed to be 105 boys to 100 girls (which sometimes is shortened to "a ratio of 105"). In human societies, however, sex ratios at birth or among infants may be considerably skewed by sex-selective abortion and infanticide. The CIA estimates that the current world wide sex ratio at birth is 107 boys to 100 girls.
Maxico
An atom with an unbalanced ratio of protons and neutrons will undergo radioactive decay to achieve a more stable configuration. The type of decay process, such as alpha or beta decay, will depend on the specific imbalance in the nucleus. This allows the atom to transform into a more stable element by adjusting the proton-neutron ratio.