Why would it much more difficult to construct a karyotype of unstained chromosomes?

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

if you know your abc's you should be able to get your answer or just use google

i got you i did it ya know what it is just needing to fill this in for a quick task!