Age-sex distribution, Biology

Age-Sex Distribution

While studying exponential growth we need to know more than just the birth and death rates because these rates vary with age and sex. Age structure in a population is important because individuals vary in their age and many functional aspects are linked with age.

For example, women can bear children i only between ages of 15-44 years, also infants (children under 1 year of age) and older people have higher rates of mortality as compared to individuals of intermediate ages. Accordingly a population can be subdivided into three sub groups.

  1. Pre reproductive (0- 14 years)
  2. Reproductive (15 - 44 years)
  3. Post reproductive (45 years and above)

For a more detailed understanding of the age-structure individuals of a population are divided into age groups with 5 or 10 year interval. Further, males and females can be shown separately in a diagram. Alternately age-sex distributions are also drawn by plotting the percentage of the population of each sex in each group.

Posted Date: 1/21/2013 1:41:47 AM | Location : United States







Related Discussions:- Age-sex distribution, Assignment Help, Ask Question on Age-sex distribution, Get Answer, Expert's Help, Age-sex distribution Discussions

Write discussion on Age-sex distribution
Your posts are moderated
Related Questions
The client was admitted to the hospital with hypertension (high blood pressure). The development of arteriosclerosis (plaque buildup in the arteries) has increased peripheral resis

Why Meat and Poultry are important for human body? Meat and poultry are rich sources of proteins of high biological value. They do not contain carbohydrates. All

Advantages and Disadvantages: of Organizational Charts Advantages  a)  Defining the Organizational Relationship Without a,chart, many people might view the organization as

Nutritional care can be recognized as both a science and art. Can you tell why? It is considered as a science because the raped  advances in scientific knowledge provides all h

Iodine Iodine functions are essential components of the thyroid hormones thyroxine (T 4) and triiodothyronine (T3), which regulate the rate of energy metabolism. Absorbed iodi

Pre-operative and Post-operative Nursing Care of a Child with Cleft Lip: We shall begin with pre-operative nursing care and then focus on post-operative care. As you know that

Q. What are the main bryophyte groups? The major bryophyte groups are the mosses, the hornworts and the liverworts.

The internal composition of the cell is maintained because the plasma membrane is selectively permeable to small molecules. A lot of biological molecules are unable to distribute b


Why did scientists want to map the human genome? They wanted to learn the location of all the significant genes in the genome in order to learn how the genome is organized, ho