9. If the diploid number in a liver cell of an organism is 52

chromosomes, how many chromosomes are there in other

somatic (body) cells of this organism? How many chromosomes

are there in its gametic (sex) cells?

Answer: If there are 52 chromosomes then 51 chromosomes are autosomal and 1 pair will be sex related.

It is valid in diploid condition.

Answer: There are 52 chromosomes in other somatic (body) cells.

There are 26 chromosomes in the gametic (sex) cells.

Explanation: There are two major classes of cells in the body: the somatic or body cells and the gametes or sex cells. Somatic cells undergo mitosis and have a diploid number of chromosomes while gametes undergo meiosis and have a haploid number of chromosomes. The sex cells are the sperm cells from the male and egg cells from the female. With the exception of the sperm cells and egg cells, other cells of the body are somatic cells. Sex cells have half the number of chromosomes found in the parent cells, they also have one single set of chromosomes. Liver cell is a body cell and because its diploid number of chromosome is 52, therefore other somatic cells also have 52 chromosomes.

The number of chromosomes in the gametes is 26 because sex cells have haploid number of chromosomes, that is, half the number of chromosomes found in the parent cell. Since the diploid number of chromosomes is 56, the haploid number of chromosomes of the gametes is 56/2 = 26