In particular, it explains that humans have one fewer chromosome pair in their cells than apes, due to a mutation found in chromosome number 2 that caused two chromosomes to fuse into one.

For example, prior to undergoing meiosis ... referred to as an equational division because it does not reduce chromosome number in the daughter cells — rather, the daughter cells that result ...

In all cultures examined the chromosome number was predominantly 46, as shown in Table 1, and in every case there was a normal female karyotype. A representative tissue section, metaphase and ...

Human females, for example, are born with hundreds of thousands ... Meiosis II resembles a mitotic division, except that the chromosome number has been reduced by half. Thus, the products of ...

Each chromatid is a full length DNA molecule. The stages outlined in the following example show a cell with a diploid chromosome number of four (two sets of two chromosomes) undergoing cell division.