Types of Sex Ratio
The sex ratio varies according to the age profile of the population. It is generally divided into four:
- primary sex ratio — ratio at fertilization
- secondary sex ratio — ratio at birth
- tertiary sex ratio — ratio in sexually active organisms
- quaternary sex ratio — ratio in post-reproductive organisms
Measuring these is a problem since there are no clear boundaries between them.
Read more about this topic: Sex Ratio
Famous quotes containing the words types of, types and/or ratio:
“Our children evaluate themselves based on the opinions we have of them. When we use harsh words, biting comments, and a sarcastic tone of voice, we plant the seeds of self-doubt in their developing minds.... Children who receive a steady diet of these types of messages end up feeling powerless, inadequate, and unimportant. They start to believe that they are bad, and that they can never do enough.”
—Stephanie Martson (20th century)
“Our children evaluate themselves based on the opinions we have of them. When we use harsh words, biting comments, and a sarcastic tone of voice, we plant the seeds of self-doubt in their developing minds.... Children who receive a steady diet of these types of messages end up feeling powerless, inadequate, and unimportant. They start to believe that they are bad, and that they can never do enough.”
—Stephanie Martson (20th century)
“Official dignity tends to increase in inverse ratio to the importance of the country in which the office is held.”
—Aldous Huxley (1894–1963)