"Whole chromosomes" refers to complete sets of genetic material that contain all the genes necessary for an organism to function and develop. Full definition
Others gained or lost whole chromosomes, but gained or lost fractions of other chromosomes. (sciencedaily.com)
Now the same strategies can be used to create whole chromosomes in order to investigate chromosome behavior (scientificamerican.com)
Instead of blasting away at whole chromosomes, they extracted mRNA from 37 different human organs and tissues, copied it back into DNA, and sequenced that. (discovermagazine.com)