2.5 Diploid eukaryotic cells have two sets of chromosomes. (a) A set of chromosomes from a female human cell. Each pair of chromosomes is hybridized to a uniquely colored probe, giving it a distinct color. (b) The chromosomes are present in homologous pairs. Each pair consists of two chromosomes that are alike in size and structure and carry information for the same characteristics.

[Part a: courtesy of Dr. Thomas Ried and Dr. Evelin Schrock.]