There are the same number of chromosomes and DNA molecules in this rat's main spermatocyte cell as in its somatic cell (42 chromosomes). This is due to the fact that primary spermatocytes are still diploid because they have not experienced meiosis to form secondary spermatocytes (2n).
<h3>What is
meiosis?</h3>
In sexually reproducing organisms, meiosis is a unique type of cell division of germ cells that results in the production of gametes, such as sperm or egg cells. It comprises two rounds of division, producing four cells with only one copy of each chromosome as a final product (haploid).
Additionally, each chromosome undergoes genetic material cross-pollination between the paternal and maternal copies before division, resulting in novel combinations of the genetic code on each chromosome. Later, when a male and a female go through meiosis, the haploid cells they generate unite to form the zygote, another cell with two copies of each chromosome.
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