Whether it is brand-new or years old, a mattress too soft for your comfort level may make for many restless nights. As long as the mattress is in good shape, there's no need to replace it to achieve the desired level of firmness.Instead, purchase a firm topper, slide a bed board beneath the mattress, or add extra support to the bed frame itself. sheet of plywood cut to the same size as the mattress offers support for a mattress that has lost some of its firmness. Slide the plywood between the mattress and box spring.
Human cells normally contain 23 pairs of chromosomes, for a total of 46 chromosomes in each cell (illustration). A change in the number of chromosomes can cause problems with growth, development, and function of the bodyâs systems.
Chromosomal abnormalities are a group of conditions that are the result of a problem with one of the 23 pairs of chromosomes.Chromosomes are the structures within the bodyâs cells that contain genes. Normally, people have 23 pairs of chromosomes. chromosomal abnormality can affect the number of chromosomes, the structure of certain chromosomes, or the composition of chromosomes. If the material found in chromosomes is balanced so that the expected amount is found in each cell, no abnormalities occur.