Background: Diploid/somatic cells always have an even number of chromosomes because they exist in pairs (2n). Haploid/sex cells contain only half the number of chromosomes (n). An example of haploid cells is sperm found in male species and eggs found in female species. One unique set of chromosomes are found in the father's sperm (n) and one unique complementary set is found in the mother's egg (n). When the sperm fertilizes the egg, it becomes a diploid cell. (n + n = 2n).
In our somatic cells are 23 pairs of chromosomes or 2n=46.
In our sex cells, we have 23 unique chromosomes or n=23.
Sex cells = sperm & egg (haploid)
Somatic = body cells (diploid)
Chromosomes: Read pages 117-121 in your book
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