Final answer:
The supportive proteins for DNA in chromosomes are histones, which are rich in amino acids and form nucleosomes with DNA wrapped around them, leading to the creation of chromosomes.
Step-by-step explanation:
The proteins providing a supportive framework for the DNA in chromosomes are composed of histones. These histones are evolutionarily conserved proteins that are rich in basic amino acids and form an octamer around which DNA is tightly wrapped, creating structures called nucleosomes. DNA packaged in this manner forms the chromatin fiber, which, when further compacted, creates chromosomes.