Which of the following cannot be detected in a developing foetus by amniocentesis?
Down’s syndrome
Jaundice
Klinefelter’s syndrome
Sex of the foetus
The minimum number of females per $1000$ males are found in
On which day, world population touched $5 ^{th}$ billion?
Generally there was population growth rate increase in India, but in which of the following year there was decrease in population growth rate
The bio-index number means