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.
Someone did infact post the correct answer. The correct answer is that there are 92 chromosomes before meiosis, and after, there are 23 chromosomes in each sex cell produced. Before meiosis the ploidy is 2n and each chromosome is duplicated.The diploid number of humans is 46, and since the chromosomes are duplicated (doubled), the total number of chromosomes is 92. The ploidy of the sex cells produced is n, (haploid, which is 23 in humans) so there are 23 chromosomes per sex cell produced.omeone did infact post the correct answer. The correct answer is that there are 92 chromosomes before meiosis, and after, there are 23 chromosomes in each sex cell produced. Before meiosis the ploidy is 2n and each chromosome is duplicated.