Zoology 10th Edition by Stephen Miller,John Harley

تمرين 10

In eukaryotic cells, DNA and protein associate in nucleosomes. Further condensation produces chromatin and even-tually chromosomes. In this condensed state, one can distinguish chromosomes from each other. Sex chromosomes are represented differently in opposite sexes and autosomes are similar in members of both sexes.
Prokaryotic organisms (e.g., bacteria) have chromatin that remains in a dispersed state throughout their