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A diploid cell means _____.
A. n
B. 2n
C. 3n
D. 4n

Last updated date: 17th Jun 2024
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Hint: The parents each donate one pair of chromosomes in diploid species that will comprise the two sets of the offspring. There are 46 chromosomes in humans. Using mitosis, diploid cells replicate, which produces a nearly duplicate copy of the cell.

Complete step by step answer:
First we should know about cells to answer this question. Cells are life's foundation. Tiny, microscopic cells help in the composition of plants, humans, bacteria,  animals, algae, as well as every other living organism. In order to make up a portion of the organism, several cells have special properties to represent a different type of cell. In the chromosomes of the nucleus of the cell, eukaryotic cells, or cells that have a nucleus, have DNA. The word ploidy is used to describe the number of chromosome sets located within a cell's nucleus. Various species have varying chromosome numbers. Haploid and diploid cells are two types of eukaryotic cells, with the primary distinction being the number of chromosome sets present in the nucleus.
Now, let us find the solution from the options-
Option A: Cells which contain only one full set of chromosomes are haploid cells. In humans, 23 chromosomes are found in haploid cells. Haploid cells are represented by n. Therefore, the option A is incorrect.
Option B: Two homologous copies of each chromosome inherited by the mother and father are available in diploid cells. With the exception of a few organisms, all mammals are species of this kind. In human diploid cells, 46 chromosomes are present. By 2n, the diploid cells are shown. Therefore, the option B is correct.
Option C: Triploid shows three homologous sets of chromosomes. It is represented by 3n. Therefore, the option C is incorrect.
Option D: Tetraploid shows four homologous sets of chromosomes. It is represented by 4n. Therefore, the option D is incorrect.
Thus, the correct answer is option (B) 2n

Note: The somatic cells in humans are all diploid cells. These include cells that constitute the organs, bones, muscles, hair, skin, and every other part of the body rather than eggs or sperm cells.